colt ar15 rifle
The Colt AR-15 is a lightweight, magazine-fed, gas-operated semi-automatic rifle. The “AR” stands for the first two letters of ArmaLite. It was designed with the extensive use of aluminum alloys and synthetic materials to reduce weight. Colt’s Manufacturing Company currently uses the AR-15 trademark for its line of semi-automatic AR-15 rifles.
colt ar15 rifle
Due to financial problems, and limitations in terms of manpower and production capacity, ArmaLite sold the AR-15 design and the AR-15 trademark along with the ArmaLite AR-10 to Colt’s Manufacturing Company in 1959. Colt started selling the semi-automatic version of the M16 rifle as the Colt AR-15 in 1964. The first mass production version was the Colt AR-15 Sporter, in .223 Remington, with a 20-inch barrel and issued with 5-round magazines. Over the decades, Colt has made many different types of AR-15 rifle and carbine models, including the AR-15, AR-15A2, AR-15A3, AR-15A4, and many other models.
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Although the sale of new AR-15s was banned by the Federal Assault Weapons Ban from 1994 to 2004, Colt and others continued to sell legally compliant versions during that period. On September 20, 2019, Colt announced that it would no longer produce the AR-15 for private use, due to market saturation. It would still produce the AR-15 for police and military units though. However, by May 2020, changed market conditions and a significant increase in demand allowed Colt to resume production for sales to private users.
U.S. Patent 2,951,424 describes the cycling mechanism used in the original AR-15. The bolt carrier acts as a movable cylinder and the bolt itself acts as a stationary piston.
The gas expands into the port and down a gas tube, located above the barrel that runs from the front. Here, the gas tube protrudes into a “gas key” (bolt carrier key), which accepts the gas and funnels it into the bolt carrier.
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At this point, the bolt is locked into the barrel extension by locking lugs, so the expanding gas forces the'[. As the bolt carrier moves toward the butt of the gun, the bolt cam pin, riding in a slot on. The bolt’s rearward motion extracts the empty cartridge case from the chamber. As soon as the neck of the case clears the barrel extension, the bolt’s spring-loaded ejector forces it out.
Behind the bolt carrier is a plastic or metal buffer, which rests in line with a return spring. A groove machined into the upper receiver guides the bolt cam pin and prevents it and the bolt from rotating. The bolt’s locking lugs push a fresh round from the magazine as the bolt moves forward. As the bolt’s locking lugs move past the barrel extension, the cam pin twists into a pocket milled into the. This twisting action follows the groove cut into the carrier and forces the bolt to twist and “lock” into the.
Smith & Wesson M&P15T 5.56 AR15 Rifle
AR15 Rifle Designed for a multitude of sport shooting conditions, personal defense, and professional applications the M&P15T 5.56 rifle from Smith and Wesson is not only reliable but versatile as well.
Smith and Wesson manufacture the S&W M&P series rifles with barrels cold hammer-forged from 4140 steel and are lightweight but rugged, providing the shooter a great combination of functionality and stylish form.
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