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A rifle is a firearm designed to be fired from the shoulder, with a barrel that has a helical groove or pattern of grooves ("rifling") cut into the barrel walls. The raised areas of the rifling are called "lands," which make contact with the projectile (for small arms usage, called a bullet ), imparting spin around an axis corresponding to the orientation of the weapon.
The .30-06 remained the U.S. Army's primary rifle and machine gun cartridge for nearly 50 years before being replaced by the 7.62×51mm NATO and 5.56×45mm NATO, both of which remain in current U.S. and NATO service. The cartridge remains a very popular sporting round, with ammunition produced by all major manufacturers.
The Mondragón Modelo 1908 was a gas-operated rifle with a rotating bolt using a cylinder and piston arrangement, a design considered unusual at the time. The bolt and the locking lugs was very similar to the bolt-action rifle. A switch, located on the charging handle, would disengage the bolt from the gas system, allowing the firearm to ...
The lower receiver, without the receiver extension, rear takedown pin, and buttstock, is shown at bottom. An AR-15–style rifle is a lightweight semi-automatic rifle based on or similar to the Colt AR-15 design. The Colt model removed the selective fire feature of its predecessor, the original ArmaLite AR-15, itself a scaled-down derivative of ...
Front: wing protected post. The M1 Garand or M1 rifle [nb 1] is a semi-automatic rifle that was the service rifle of the U.S. Army during World War II and the Korean War . The rifle is chambered for the .30-06 Springfield cartridge and is named after its Canadian-American designer, John Garand.
The M1903 Springfield, officially the U. S. Rifle, Caliber .30, M1903, is an American five-round magazine -fed, bolt-action service repeating rifle, used primarily during the first half of the 20th century. The M1903 was first used in combat during the Philippine–American War, [5] and it was officially adopted by the United States as the ...
Aerial combat provided the clean environment the rifle required, and its semi-automatic capability was an advancement over bolt-action rifles. However, the rifle was expensive to make. The air service turned to the Swiss-produced Mondragón rifle , which was tested by the army; though less accurate than Mauser's design, it cost about a third as much.
