5.56 PMC for sale

Code:26G-LAR-556K

MPN:556K

UPC:741569010122

5.56 PMC for sale

5.56 PMC for sale

The development of the cartridge that eventually became the .223 Remington (from which 5.56mm NATO would eventually be developed) would be intrinsically linked to the development of a new lightweight combat rifle. The cartridge and rifle were developed as one unit by Fairchild Industries, Remington Arms, and several engineers working toward a goal developed by U.S. Continental Army Command (CONARC). Early development work began in 1957. A project to create a small-calibre, high-velocity (SCHV) firearm was created. Eugene Stoner of Armalite was invited to scale down the AR-10 (7.62mm) design. Winchester was also invited to participate.^[11][5] The parameters that were requested by CONARC:

Springfield Armory‘s Earle Harvey lengthened the .222 Remington cartridge case to meet the requirements. It was then known as the .224 Springfield. Concurrently with the SCHV project, Springfield Armory was developing a 7.62mm rifle. Harvey was ordered to cease all work on the SCHV to avoid any competition of resources.

5.56 PMC for sale

Eugene Stoner of Armalite (a division of Fairchild Industries) had been advised to produce a scaled-down version of the 7.62mm AR-10 design. In May 1957 Stoner gave a live-fire demonstration of the prototype of the AR-15 for General Willard Wyman, Commander-in-Chief of CONARC. As a result, CONARC ordered rifles to test. Stoner and Sierra Bullet’s Frank Snow began work on the .222 Remington cartridge. Using a ballistic calculator, they determined that a 55-grain bullet would have to be fired at 3,300 ft/s (1,006 m/s) to achieve the 500-yard performance necessary.^[5]

Stoner contacted both Winchester and Remington about increasing the case capacity. Remington created a larger cartridge called the .222 Special, which was loaded with DuPont IMR4475 powder.^[5]

During parallel testing of the T44E4 (future M14) and the AR-15 in 1958, the T44E4 experienced 16 failures per 1,000 rounds fired compared to 6.1 for the AR-15.^{[5] 5.56 PMC for sale}

Due to several different .222 caliber cartridges being developed for the SCHV project, the 222 Special was renamed .223 Remington in 1959. In May of that year, a report was produced stating that 5 to 7-man squads armed with AR-15 rifles had a higher hit probability than 11-man squads armed with M-14 rifles. At a 4th of July picnic, Air Force General Curtis LeMay fired the AR-15 and was very impressed with it. He ordered a number of them to replace M2 carbines that were in use by the Air Force. By November, testing at Aberdeen Proving Ground showed that the AR-15 failure rate had  5.56 PMC for sale to 2.5 failures per 1,000 rounds, resulting in the M-16 being approved for Air Force Trials.^[5]