The ArmaLite m16 rifle served as the basis for the development of the M16 for Sale family of military rifles used by the United States military. The first generation M16 was a 5.56 mm, 45 cal. automatic rifle that could hold 20 rounds.

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BRIEF HOSTORY ON M16 FOR SALE

In 1928, a U.S. Army ‘Caliber Board’ conducted firing tests at Aberdeen Proving Ground and recommended transitioning to smaller caliber rounds, mentioning in particular .27 in (6.86 mm) caliber. Largely in deference to tradition, this recommendation was ignored and the Army referred to the .30 in (7.62 mm) caliber as “full sized” for the next 35 years. After World War II, the United States military started looking for a single automatic rifle to replace the M1 Garand, M1/M2 Carbines, M1918 Browning Automatic Rifle, M3 “Grease Gun” and Thompson submachine gun.

However, early experiments with select-fire versions of the M1 Garand proved disappointing.  During the Korean War, the select-fire M2 carbine largely replaced the submachine gun in US service and became the most widely used carbine variant. However, combat experience suggested that the .30 Carbine round was underpowered. American weapons designers concluded that an intermediate round was necessary, and recommended a small-caliber, high-velocity cartridge.

However, senior nsisted that a single, powerful .30 caliber cartridge be developed, that could not only be used by the new automatic rifle, but by the new general-purpose machine gun (GPMG) in concurrent development. This culminated in the development of the 7.62×51 mm NATO cartridge.

The U.S. Army then began testing several rifles to replace the obsolete M1. Springfield Armory’s T44E4 and heavier T44E5 were essentially updated versions of the M1 chambered for the new 7.62 mm round, while Fabrique Nationale submitted their FN FAL as the T48.

ArmaLite entered the competition late, hurriedly submitting several AR-10 prototype rifles in the fall of 1956 to the U.S. Army’s Springfield Armory for testing. The M16 for Sale assault rifles for sale featured an innovative straight-line barrel/stock design, forged aluminum alloy receivers, and phenolic composite stocks. It had rugged elevated sights, an oversized aluminum flash suppressor and recoil compensator, and an adjustable gas system.

The final prototype featured an upper and lower receiver with the now-familiar hinge and takedown pins. The charging handle was on top of the receiver and placed inside the carry handle. For a 7.62 mm NATO rifle, the AR-10 was incredibly lightweight at only 6.85 lb (3.11 kg) empty. Initial comments by Springfield Armory test staff were favorable, and some testers commented that the AR-10 was the best lightweight automatic rifle ever tested by the Armory.In the end the U.S. Army chose the T44.

now amedm16a4 and m4 carbine assault which was an improved  machine gun for sale Garand with a 20-round magazine and automatic fire capability.The U.S. also adopted the M60 general purpose machine gun (GPMG).Its NATO partners adopted the FN FAL and HK G3 rifles and the FN MAG and Rheinmetall MG3 GPMGs.