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The ArmaLite AR-15 was designed to be a lightweight rifle and to fire a new high-velocity, lightweight, small-caliber cartridge to allow infantrymen to carry more ammunition. [ 11 ] In 1959, ArmaLite sold its rights to the AR-15 to Colt due to financial difficulties and limitations in terms of manpower and production capacity. [ 1 ]
The .458 SOCOM (11.63×40mmRB) is a moderately large round designed to work in an AR-15 platform.This is achieved by installing a 458 bolt and barrel. The 300-grain (19 g) round offers a supersonic muzzle velocity of 1,900 ft/s (580 m/s) and 2,405 ft⋅lbf (3,261 J), [1] similar to a light .45-70 but with a much smaller case.
In 1961, marksmanship testing compared the AR-15 and M-14; 43% of ArmaLite AR-15 shooters achieved Expert, while only 22% of M-14 rifle shooters did. Le May ordered 80,000 rifles. [8] In July 1962, operational testing ended with a recommendation for the adoption of the ArmaLite AR-15 rifle chambered in .223 Remington. [8]
Any AR-15/AR-10 cartridge cases that are derived from the 7.62x51 can also be formed from these listed calibers. (7.62x51 & .308 are similar in external dimensions though the Brass has different internal capacity and Max PSI recommendations are different & Chambers are different.) AR-10 :The AR-10 is slightly larger and heavier than the AR-15 ...
An AR-15–style rifle is a lightweight semi-automatic rifle based on or similar to the Colt AR ... The shorter barrel reduced bullet velocity by about five percent ...
Children are less likely to survive AR-15 wounds. The leading cause of death in children between the ages of 1 and 19 in the U.S. is gun violence, according to a recent New England Journal of ...
The AR-15, chambered for the new, lightweight, high velocity 5.56 mm round, included features of Stoner's previous designs. Under financial pressure, ArmaLite sold the entire rights to the AR-15 design to Colt, which quickly secured significant US military and law enforcement contracts for the weapon, beginning with the USAF Security Forces (1962).
The Buffalo gunman left a manifesto saying he specifically chose the AR-15 because of its high-capacity magazines and ability to “kill effectively.” Cruz fired 139 rounds of 5.56-and-.223 ...