Astronomy m14 in Ophiuchus, as globular clusters, about 100 light years in diameter. 1764 Messier discovered. 3 million light years away from us. A new star appeared in 1938 m14, 1991 年 m14 Hubble Space Telescope to search for new nearby stars or nebula remnant, but no. Military Science American Masters 约翰伽兰德 the finest creations of firearms was finalized in October 1935 the 7.62mm caliber semiautomatic rifle m1, also known Garand rifle. Garand rifle 0.30-06 (7.62 × 63mm) rifle, gas operated automatically by the principle of rotating bolt locking methods, with good reliability, high precision shooting, but according to the U.S. military during World War II feedback, Garand rifle there are still many aspects that need improvement, such as magazine capacity 8 rounds bomb fixed amount of too little, too long the whole guns and other defects. Garand rifle several times in the design of the t20 after the test, and finally to improve the test firing t65 t37 rifle shells. The early 1950s, t37 t44 test test rifle rifles into the further development of its redesigned form features and improved Introduction and gas systems. The t44 is on the development of further t44e4 and t44e5. 1957 年 5 月 l day, the U.S. Army Ordnance Minister announced the formal adoption t44e4, and was named "America m14 7.62mm rifle," while t44e5 was named m15. From 1945, the U.S. implementation of the "light rifle research project" started, m14 rifle went through 12 years of development, for the design, development, testing and improving the overall investment of up to $ 6,352,000. At the time, compared with the m14 test with another 3 rifles: one is to launch bombs t25 t65 rifle, a rifle is the t48, there is a British Enfield small arms factory developed without care structure em2 rifle. Finally, test the m14 and t48, and t48 ranked first. But the United States and ultimately _select_ed m14, m14 because of the quality of light, production, processing and operation with the Garand rifle and close and, more important reason is - m14 is the "U.S. local goods." m14 rifle and then develop a formal _set_ting and m14e2 m14e1 both improved, which m14e2 was officially adopted in 1968, named for the m14a1. 1959 年 12 月 United States to renounce the m15 weighs 6.1kg program, replaced by the m14a1, but the m15 supported on the shoulder boards and reference to the m14 bipod were used. Because a plant can not rely on the timely completion of large procurement plan, as usual, m14 production contract by the U.S. government with a number of arms manufacturers signed. April 1958, Springfield Armory began small batch production m14; 1959, the U.S. government and the four companies signed a procurement contract, to begin mass production of m14 rifle; January 23, 1963, the U.S. Department of Defense command to terminate the procurement m14. 1958 to 1965, spending 130 million U.S. dollars production costs, a total of four manufacturers produced 1,380,358 U.S. Government m14. Of which: ● U.S. Army Springfield Armory production of 173,093 (the other argument is 167,000); ● 奥林马西森's Winchester - Weston Arms Branch (referred to as Winchester) production of 350,501; ● Harrington - Richardson Arms Company (h & r) production of 537,582; ● Thompson - Ramo - Wooldridge Limited (trw) production of 319,182 In addition, m14 rifle national competition level (generally referred to as m14nm) to begin production in 1959, mainly for shooting game. m14nm only single shot, and with a special race sights, and a high precision barrel. m14nm mainly by the Springfield Armory and trw production until the early 1990s, m14nm still people in the United States is popular shooting game, but the U.S. military has been equipped with semi-automatic sniper rifle m21 is also made of the South m14nm improvement. Face cut Massachu_set_ts is the U.S. Army Springfield Armory Garand rifle and the m14 rifle, the main production plant, its construction in 1794, is the first U.S. law approved by Congress arsenal, m14's shutdown of Spring great damage to non-de Arsenal, June 30, 1964, the production m14 machine is dedicated storage or conversion to other uses, from Springfield Armory officially closed and turned into a historical museum in 1968 (Note: Now Springfield arsenal of weapons has nothing to do with the company, which will be described later). m14 m16 replacement can be said to be the inevitable result. As times changed, a variety of new weapons and new tactics of combat functions appear to narrow the rifle, combat distances. Johns Hopkins University Institute for combat, "Investigation on the battlefield casualties" of a war, World War II and Korean War combat record, duty diaries, casualty reports, a detailed research and statistics, the cumulative use of rifles derived Frequency curve: use the battle rifle, 100m in the case of fire about 30%, 200m in the case of fire about 72%, 300m in the case of fire about 88%, 400m in the case of fire about 92% so that the maximum effective range of rifle is 300 ~ 400m has been developed enough. m14 by m16 replaced not because of its performance is poor, said the m14 from the performance is excellent, but the overall design, said, m14 is an outdated weapon. m14 military rifles of the past emphasis on design - high accuracy and long range, but too heavy, leading to m14 combat in Southeast Asia in the jungle on foot extremely inconvenient, and mechanized infantry reflects not conducive to armored vehicles to carry m14 impact the battlefield mobility. In addition, 7.62mm nato bombs red large, heavy recoil when firing, the soldiers it difficult to control the gun in bursts, so automatic firing accuracy is poor. The same period, while the Soviet Union developed the ak47 with fierce fire, small size and high reliability. m16 m14 is replaced in May 1967, the late 1960s, the U.S. military to completely withdraw from active service m14 front-line troops, only a small amount of use. Meanwhile, the U.S. military has also improved as a platform into the m14 and m25 m21 sniper rifle, the semi-automatic sniper rifle performed well in combat. Rescue Dawn After the withdrawal of equipment from the U.S. ground forces, m14 is still used on U.S. Navy ships, the main cast for sea sea cable fleet defense gun or rifle. Army Ranger training schools use m14, in West Point, Annapolis Naval Academy, Virginia Military Institute and across the country young reserve officer of national training camp (jrotc) central figure can be seen m14 in the United States some of the state or local law enforcement agencies have also used the U.S. Army aid m14. m14 also often used as a guard of honor and protect the flag etiquette rifle team, for example, gun etiquette Arlington National Cemetery. In addition, m14 are often used for light weapons development program in the comparison test. Both Airborne Division in Iraq in 2003 on the battlefield using m14, Basically, there is one every Banpei. Many light infantry are complaining about m16 can not effectively attack targets outside the 600m open field, and m14 to connect to the task. Inspired by this, in November 2003, the U.S. Army quick reaction force official was traveling light brigade equipped with Stryker Liu Boulder mk iv installed sight of the m14, each Banpei 1, provide remote fire support. Now, every one in the U.S. Army forces in Iraq are equipped with a wide range of m14 rifle sight (including the m25 sniper rifles) used to provide long-range fire support, such as sight with a high rate, low-rate targeting mirror reflection without magnification sight, there is no uniform standard. Reveal internal improvements made by the Garand rifle m14, firing 7.62 × 51mm nato bombs, bomb capacity of a large amount of Bijialande rifles, machine speed _select_able by single or bursts of firing. But the fact is that most U.S. military equipment, m14 regard the single speed machine fixed in position. m14 principle of using a conductive air, Garand in the m14 on the first block and the expansion of gas devices and patented air conductivity, which is characterized by stomatal conductance can be automatically turned off to limit access to the piston cylinder of propellant gas. Gas installations in the bottom of the barrel guide, guide air from the hoop, hoop top of Gas plug, piston cylinder, piston, bolt and recoil spring frame components. Hoop right rear of Gas valves are closed, stomatal closure can lead to firing rifle grenades. Gas system and bolt guide the work process is: When the bullet holes through the guide, some barrels of gunpowder under the guidance of gas through the pores, and through the closed valve and piston into the hole on the sidewall of the piston head. As the front hoop to the top of Gas closed by plugs, propellant gas expansion only in the piston head to drive the piston backward movement Zhang. 4mm piston backward movement, the original and the guide holes are the holes will stagger on, prevents the propellant gas to enter the piston head, so this device does not require expansion of Gas gas regulator. When the piston stroke to an end after the ride, the guide below the exhaust gas hoop Kong Kaiqi, propellant gas from these Kong Zhongyi out. After escaping propellant gas, the pressure drives the piston head back disappeared. At this point the compressed recoil spring done, push the bolt forward box to drive the bolt recoil, bolt push the shells into the breech. Suddenly blocking the shoot on the bolt and the casing of the lock groove interactions, to achieve locking bolt then rotate to the right. Again the gun was outgoing state. m14 hook structure with short positions, when the last situation got fired, the gun's short positions a chance to be receiver on the left hook buckle. m14 institutions are also launching the evolution from a Garand rifle, and most of the parts are similar, including the double hook hammer, trigger and trigger bar (the first block of iron) and is located in the back of the first sear sear spring with the first Second resistance iron. Fired bodies together on the rear casing. Precision Components m14's casing is made of steel cast in 8620, U.S. Marines found by shooting game h & r, Springfield Armory and Winchester produced 400,000 casing life to hair, while the receiver trw better able to send to 450000. m14 barrel is chrome molybdenum alloy steel or stainless steel barrel produced a lot of contractors, such as the h & r, trw, Winchester, Springfield Armory, General Dynamics, etc., and the government contractor production quality control standards are very strict, for example, chrome-plated barrel for every 100 will be randomly _select_ed in nine of them to check the barrel if the 9 pass quality inspection, then the entire batch of 100 will be all melted down the barrel. m14 barrel wall thickness according to different sub-standard (ie light), medium and heavy-duty 3. Military-type general level of the barrel is chrome, competition level and civilian-type is generally not chrome barrel. Most of the military type, and competition level specifications of the barrel is a lightweight, small to medium size, heavy-duty specification grade barrel little game. Requirements of military life of the barrel-type bullets of not less than 15,000, while the competition-level precision match barrel life from 5000 to 9000 bullets, that is, on the barrel with a projectile more than this figure, then firing accuracy is not reached to the competition level. There are several m14 muzzle device. Military-type suppressor is a long cage shape, can be used in all levels of military-type m14 and m14 games, some game levels m14 rifle also has other types of suppressor, for example, there is a split form is relatively short Vortex suppressor, there is a comparison of similar m16a2 short cage-shaped suppressor. m14e2/m14a1 mainly used for bursts of fire, so jump with anti-gun control, which is a row of small holes with a number of steel casing, _set_ in the standard suppressor, and is used bolts and fixed on the gun nut the mouth of the bayonet base, can effectively control muzzle jump. m14 buttstock is the earliest made of walnut or birch, walnut, birch rifle butts than 20% lighter and more robust, is said to have a small group of good quality cherry butt. Development of technology in the early 1960s, synthetic materials such as glass fiber instead of wood, only part of the competition level of the m14 rifle was used to increase butt size of walnut or birch. M14 military-type rifle can be glass fiber coated with a variety of water-based paint camouflage. Military and civilian-type rifle-type difference is that there is no space to accommodate the speed of machine handle the gap. Macmillan Company currently offers a variety of synthetic materials m14 rifle butts. m14a1 rifle also used walnut or birch. m14a1 rifle with straight stock, after the grip and can be folded under the front handguard grip, which is m14a1 m14 appearance with the main difference. Fore can be fixed in the care of wood below the 5 position, each interval of 25mm, to accommodate different stature shooters. In addition m14a1 rubber cushion on the butt and hinged butt plate, butt plate can be lifted up on the shoulders of striker, easy to control the rifle in the shooting process. In 1962, Springfield Armory who have developed 5 types m14e1 folding stock, including the Flip-folding and side folding style, but have not been used. Springfield is now the company has the production and sale of weapons had m1a-a1 folding butt, this butt of a rifle by the Italian bm59 metal folding butt, plus plastic pistol-shaped grip. m14 rifle sights, including the mechanical cylindrical front sight and fixed rear sight of the spy-hole curved according to the door, according to gate bias and to adjust the level of wind, rear sight partition is 200m ~ 1000m, 200m each for a division. According to their own doors front sight and 3 sizes, standard (military type) front sight width 2.13mm, the other two rifle sight is the competition level, respectively, width 1.83mm, 1.57mm; spy hole diameter of a standard size (1.75mm) and class size of two games (1.32mm and 1.51mm). Competition level and also the mechanical sights, like the barrel marked "nm" tag. 1962 h & r has been reveal-style testing and manufacture of the night with sights, but has not been used. m14 rifle can use a direct-loading magazine can also be made to a bridge-shaped clip 10 _insert_ed in the ejection of the magazine guide slot window, through the window of the bullet into the ejection magazine. m14, 5 fat, 10 fat, 15 fat, 20 rounds and 30 rounds of play the amount of 5 steel capacity magazines, mainly for the U.S. Department of Defense ordered 20 rounds and 10 rounds magazine. Military-type magazines, including Springfield Armory contractors, trw, Winchester, h & r, etc., there are other companies. Springfield Armory 1962, has experimented with a number of aluminum magazine, and Rock Island Arsenal in the early 1970s had developed a disposable plastic magazine 30 rounds, but these have not been adopted light magazine. m14 maintenance tools multifunction wrench, barrel brush, cleaning rod 4 m3 modular, oiler, and a canvas bag mounted cleaning rod composition, these tools can be stored in the butt. m14a1 m14 did not like the butt of storage maintenance tools, so m14a1 maintenance tool to another with a nylon bag to carry. m14 multi-purpose wrench very easy to use, can be used for disassembly rifle, adjust the guide holes, elastic bands and the sights of Gas nuts, removable m2 bipod and so on. Other accessories include blanks m14 launcher, m6 m8a1 bayonet and sheath, mechanical sights protection box, gun strap, bridge-shaped clip, m5 in winter with the trigger assembly, m2 bipod, grenade launchers and so on. M79 grenade launcher in the equipment before the Vietnam War on the American hand grenade m15 m14 grenade launcher equipped with a sight and m76 grenade launcher. In use, first off hand grenades guide holes, put the blank ammunition magazine launched grenade, the grenade's tail pipe _set_ on the m76 grenade launcher. Types equipped with smoke grenades, flares, anti-tank shells, white phosphorous bombs and training. In addition, in 1961, has been tested under the hanging x-1 40mm grenade launcher, grenade launcher that is installed in the piston cylinder and bayonet m14 card shoot, and with the standard m15 grenade launcher sights aiming.
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Astronomy
M14 in Ophiuchus, as globular clusters, about 100 light years in diameter. 1764 Messier discovered. 3 million light years away from us. A new star appeared in 1938, M14, 1991 年 M14 near the Hubble Space Telescope to search for new stars or nebula remnant, but no.
Translated by Google
M14 rifle
American Masters 约翰伽兰德 the finest creations of firearms was finalized in October 1935 the 7.62mm caliber semiautomatic M1 rifle, also known as the Garand rifle. Garand rifle 0.30-06 (7.62 × 63mm) rifle, gas operated automatically by the principle of rotating bolt locking methods, with good reliability, high precision shooting, but according to the U.S. military during World War II feedback, Garand rifle there are still many aspects that need improvement, such as magazine capacity 8 rounds bomb fixed amount of too little, too long the whole guns and other defects. Garand rifle several times in the design of the T20 after the test, and finally to improve the emission test T37 T65 rifle shells. The early 1950s, T37 T44 test test rifle rifles into the further development of its redesigned form features and improved Introduction and gas systems. T44 on the further development is T44E4 and T44E5. 1957 年 5 月 l day, the U.S. Army Ordnance Minister announced the formal adoption T44E4, and was named "American M14 7.62mm rifle," while T44E5 was named M15. From 1945, the U.S. implementation of the "light rifle research project" started, M14 rifle has experienced over 12 years, used for the design, development, test and refine a total investment of up to $ 6,352,000. Because a plant can not rely on the timely completion of large procurement programs, as then, M14's production contract by the U.S. government with a number of arms manufacturers signed. April 1958, Springfield Armory began small batch production M14; 1959, the U.S. government and the four companies signed a procurement contract, to begin mass production of M14 rifles; January 23, 1963, the U.S. Department of Defense command to terminate the procurement M14. 1958 to 1965, spending 130 million U.S. dollars production costs, a total of four manufacturers produced 1,380,358 U.S. Government M14. Of which: ● U.S. Army Springfield Armory production of 173,093 (the other argument is 167,000); ● 奥林马西森's Winchester - Weston Arms Branch (referred to as Winchester) production of 350,501; ● Harrington - Richardson Arms Company (H & R) production of 537,582; ● Thompson - Ramo - Wooldridge Inc. (TRW) production of 319,182 In addition, M14 rifle national competition level (generally referred to as M14NM) to begin production in 1959, mainly for shooting game. M14NM only single shot, and with a special race sights and Qiangguan high precision. M14NM mainly by the Springfield Armory and TRW production until the early 1990s, M14NM still people in the United States is popular shooting game, but the U.S. military has been equipped with M21 semi-automatic sniper rifles are made to improve the South M14NM. Face cut Massachu_set_ts is the U.S. Army Springfield Armory M14 rifle Garand rifle and the main production plant, its construction in 1794, is the first U.S. law approved by Congress arsenal, M14 to stop the Spring great damage to non-de Arsenal, June 30, 1964, the production M14's converted to a library or a special machine he used to be, officially closed from Springfield Armory, and the historical museum was opened in 1968 (Note: Now Springfield arsenal of weapons has nothing to do with the company, which will be described later). M14 M16 replacement can be said to be the inevitable result. As times changed, a variety of new weapons and new tactics of combat functions appear to narrow the rifle, combat distances. Johns Hopkins University Institute for combat, "Investigation on the battlefield casualties" of a war, World War II and Korean War combat record, duty diaries, casualty reports, a detailed research and statistics, the cumulative use of rifles derived Frequency curve: use the battle rifle, 100m in the case of fire about 30%, 200m in the case of fire about 72%, 300m in the case of fire about 88%, 400m in the case of fire about 92% so that the maximum effective range of rifle is 300 ~ 400m has been developed enough. M16 M14 was replaced not because of its poor performance, from the performance that M14 is very good, but the overall design, said, M14 is an outdated weapon. M14 military rifles of the past emphasis on design - high accuracy and long range, but too heavy, leading to M14 in the Southeast Asian jungle on foot combat, very inconvenient, but also reflects the mechanized infantry against armored vehicles carrying M14, of the battlefield mobility. In addition, 7.62mm NATO bombs washed a large amount of recoil when firing heavy, difficult to control the soldiers in the firing when the gun, so automatic firing accuracy is poor. The same period, while the Soviet Union developed a fierce fire AK47, small size and high reliability. M16 M14 was replaced in May 1967, in the late 1960s to completely withdraw from the U.S. military M14's front-line troops on active service, only a small amount of use. Meanwhile, the U.S. military has also improved as a platform into the M14 M21 and M24 sniper rifles, the semi-automatic sniper rifle performed well in combat. Rescue Dawn After the withdrawal of equipment from the U.S. ground forces, M14 is still used on U.S. Navy ships, the main cast for sea sea cable fleet defense gun or rifle. Army Ranger training schools use M14, in West Point, Annapolis Naval Academy, Virginia Military Institute and across the country young reserve officer of national training camp (JROTC) M14 central figure can be seen in the United States some of the state or local law enforcement agencies have also used the U.S. Army aid M14. M14 is also often used as guard of honor and protecting the flag ceremonial rifle team, such as Arlington National Cemetery's ceremonial gun. In addition, M14 is also often used for light weapons development program in the comparison test. Both Airborne Division in Iraq in 2003 on the battlefield using M14, is essentially a one per Banpei. Many light infantry are complaining about M16 can not effectively attack targets outside the 600m open field, while the M14 to connect to the task. Inspired by this, in November 2003, officially for the lightly equipped U.S. Army Stryker Brigade Quick Reaction Force is equipped with a Mk IV installed Liu Boulder sight of the M14, each Banpei 1, provide remote fire support. Now, every one in the U.S. Army forces in Iraq are equipped with a wide range of sight of the M14 rifles (including the M25 sniper rifle) is used to provide remote fire support, such as sight with a high rate, low-rate targeting mirror reflection without magnification sight, there is no uniform standard. Reveal internal Improvements made by the Garand rifle M14, firing 7.62 × 51mm NATO bombs, rocket consumption Bijialande rifles large capacity, speed of machines through the optional single or bursts of firing. But the fact is that most U.S. military equipment M14 regarded single speed machine fixed in position. M14 principle of using a conductive air, Garand gas in the first block on the M14 and the expansion device and patented air conductivity, which is characterized by stomatal conductance can be automatically turned off to limit access to the piston cylinder of propellant gas. Gas installations in the bottom of the barrel guide, guide air from the hoop, hoop top of Gas plug, piston cylinder, piston, bolt and recoil spring frame components. Hoop right rear of Gas valves are closed, stomatal closure can lead to firing rifle grenades. Gas system and bolt guide the work process is: When the bullet holes through the guide, some barrels of gunpowder under the guidance of gas through the pores, and through the closed valve and piston into the hole on the sidewall of the piston head. As the front hoop to the top of Gas closed by plugs, propellant gas expansion only in the piston head to drive the piston backward movement Zhang. 4mm piston backward movement, the original and the guide holes are the holes will stagger on, prevents the propellant gas to enter the piston head, so this device does not require expansion of Gas gas regulator. When the piston stroke to an end after the ride, the guide below the exhaust gas hoop Kong Kaiqi, propellant gas from these Kong Zhongyi out. After escaping propellant gas, the pressure drives the piston head back disappeared. At this point the compressed recoil spring done, push the bolt forward box to drive the bolt recoil, bolt push the shells into the breech. Suddenly blocking the shoot on the bolt and the casing of the lock groove interactions, to achieve locking bolt then rotate to the right. Again the gun was outgoing state. M14 has a short position hook structure, when the last situation got fired, the gun's short positions a chance to be receiver on the left hook buckle. M14 is also the launch of institutions to evolve from a Garand rifle, and most of the parts are similar, including the double hook hammer, trigger and trigger bar (the first block of iron) and is located in the back of the first sear sear spring with the first Second resistance iron. Fired bodies together on the rear casing. Precision Components M14's receiver is 8620 steel casting, shooting competition found by U.S. Marines H & R, Springfield Armory and Winchester produced 400,000 casing life expectancy of hair, and TRW's receiver better able to send to 450000. M14's barrel is chrome molybdenum alloy steel or stainless steel barrel produced a lot of contractors, such as H & R, TRW, Winchester, Springfield Armory, General Dynamics, etc., and the government contractor production quality control standards are very strict, for example, chrome-plated barrel for every 100 will be randomly _select_ed in nine of them to check the barrel if the 9 pass quality inspection, then the entire batch of 100 will be all melted down the barrel. M14 barrel wall thickness according to different sub-standard (ie light), medium and heavy-duty 3. Military-type general level of the barrel is chrome, competition level and civilian-type is generally not chrome barrel. Most of the military type, and competition level specifications of the barrel is a lightweight, small to medium size, heavy-duty specification grade barrel little game. Requirements of military life of the barrel-type bullets of not less than 15,000, while the competition-level precision match barrel life from 5000 to 9000 bullets, that is, on the barrel with a projectile more than this figure, then firing accuracy is not reached to the competition level. There are several M14 muzzle device. Military-type suppressor is a long cage shape, can be used in all levels of military-type M14 and M14 on the game, some competition level also has other types of M14 rifle suppressor, for example, there is a split form is relatively short Vortex suppressor, there is a similar comparison of short-M16A2 birdcage-shaped suppressor. M14E2/M14A1 mainly used for bursts of fire, so jump with anti-gun control, which is a row of small holes with a number of steel casing, _set_ in the standard suppressor, and is used bolts and fixed on the gun nut the mouth of the bayonet base, can effectively control muzzle jump. M14 rifle is the earliest made of walnut or birch, walnut, birch rifle butts than 20% lighter and more robust, is said to have a small group of good quality cherry butt. Development of technology in the early 1960s, synthetic materials such as glass fiber instead of wood, only part of the race-class M14 rifle was used to increase butt size of walnut or birch. M14 military-type rifle can be glass fiber coated with a variety of water-based paint camouflage. Military and civilian-type rifle-type difference is that there is no space to accommodate the speed of machine handle the gap. Macmillan Company currently offers a variety of synthetic materials M14 rifle butts. M14A1 rifle also used walnut or birch. M14A1 rifle with straight stock, after the grip and can be folded under the front handguard grip, M14A1 and M14 which is the main difference appearance. Fore can be fixed in the care of wood below the 5 position, each interval of 25mm, to accommodate different stature shooters. Also on the M14A1 rifle butts and rubber cushion hinge butt plate, butt plate can be lifted up on the shoulder shooter, easy to control the rifle in the shooting process. In 1962, Springfield Armory who have developed 5 types M14E1 folding stock, including the Flip-folding and side folding style, but have not been used. Springfield is now the company has the production and sale of weapons had M1A-A1 folding butt, this butt of a rifle by the Italian BM59 metal folding butt, plus plastic pistol-shaped grip. M14 rifle sights, including the mechanical cylindrical front sight and fixed rear sight of the spy-hole curved according to the door, according to gate bias and to adjust the level of wind, rear sight partition is 200m ~ 1000m, 200m each for a division. According to their own doors front sight and 3 sizes, standard (military type) front sight width 2.13mm, the other two rifle sight is the competition level, respectively, width 1.83mm, 1.57mm; spy hole diameter of a standard size (1.75mm) and class size of two games (1.32mm and 1.51mm). Competition level and also the mechanical sights, like the barrel marked "NM" tag. 1962 H & R has been reveal-style testing and manufacture of the night with the sights, but has not been used. M14 rifles can use a direct-loading magazine can also be made to a bridge-shaped clip 10 _insert_ed in the ejection of the magazine guide slot window, through the window of the bullet into the ejection magazine. M14, 5 fat, 10 fat, 15 fat, 20 rounds and 30 rounds of play the amount of 5 steel capacity magazines, mainly for the U.S. Department of Defense ordered 20 rounds and 10 rounds magazine. Military-type magazines, including Springfield Armory contractor, TRW, Winchester, H & R, etc., there are other companies. Springfield Armory 1962, has experimented with a number of aluminum magazine, and Rock Island Arsenal in the early 1970s had developed a disposable plastic magazine 30 rounds, but these have not been adopted light magazine. M14 maintenance tools multifunction wrench, barrel brush, four M3 combined cleaning rod, cleaning rod oiler and a canvas bag loaded composition, these tools can be stored in the butt. M14A1 M14 did not like the butt of storage maintenance tools, maintenance tools so M14A1 with a nylon bag to carry to another. M14 multi-purpose wrench very easy to use, can be used for disassembly rifle, adjust the guide holes, elastic bands and the sights of Gas nuts, removable M2 bipod and so on. Other accessories include blanks M14 launcher, M6 and M8A1 bayonet scabbard, mechanical aiming protective box, gun strap, bridge-shaped clip, M5 winter with the trigger assembly, M2 bipod, grenade launchers and so on. M79 grenade launcher in the equipment before the Vietnam War on the American hand grenade M14 is equipped with a M15 grenade launcher sight and the M76 grenade launcher. In use, first off hand grenades guide holes, put the blank ammunition magazine launched grenade, the grenade's tail pipe _set_ on the M76 grenade launcher. Types equipped with smoke grenades, flares, anti-tank shells, white phosphorous bombs and training. In addition, in 1961, has been tested under X-1 hanging 40mm grenade launcher, grenade launcher that is installed in the M14 piston cylinder and bayonets card shoot, and with the standard M15 grenade launcher sights aiming. Derivative Type: m21 m14 rifle investigation