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The second number in a bolt pattern is the diameter of this circle. [2] The bolt circle has the same center point as the mounting hub to ensure that the wheel will be concentric with the mounting hub. The bolt circle's measurement is called the bolt circle diameter (BCD), [3] also called the pitch circle diameter (PCD). [4]
The 14.5×114mm (.57 calibre) is a heavy machine gun and anti-materiel rifle cartridge used by the Soviet Union, the former Warsaw Pact, modern Russia, and other countries.. It was originally developed for the PTRS and PTRD anti-tank rifles, and was later used as the basis for the KPV heavy machine gun that formed the basis of the ZPU series anti-aircraft guns that is also the main armament of ...
Typically, many rifles use thread diameters in the range between 25–27 mm (0.98–1.06 in). [citation needed] Many older rifles from the first half of the 20th century use a thread pitch around 2 mm (12.7 TPI), while many modern rifle use thread pitches around 1.5 mm (16.93 TPI). Fine threaded systems intended for hand tightening typically ...
The Colt first model ring lever rifle and Colt second model ring lever rifle are two early caplock revolving rifles that were produced by the Patent Arms Manufacturing Company between 1837 and 1841. The first model, produced between 1837 and 1838, was the first firearm manufactured by Samuel Colt , developed shortly before the advent of the ...
The table below gives a list of firearms that can fire the 5.56×45mm NATO cartridge, first developed and used in the late 1970s for the M16 rifle, which to date, is the most widely produced weapon in this caliber. [1]
The IFAR 22 is designed to be able to fired from the left or right shoulder with the safety/fire selector located on both sides of the rifle. [1] The selector consists of safe, single and full auto mode. [3] [8] It is a gas piston rifle that has a rate of fire at 600 to 800 rounds per minute. [9]
The NTW-20 is a South African anti-materiel rifle, developed by Denel Mechem in the 1990s.It is intended for deployment against targets including parked aircraft, telecommunication masts, power lines, missile sites, radar installations, refineries, satellite dishes, gun emplacements, bunkers, and personnel, using a range of specialised projectiles.
A re-designed upper receiver firing standard 5.56mm ammunition will be produced in various barrel lengths, all having a monolithic design with a full-length top rail, and three auxiliary rails for mounting accessories, free-floating barrels, and front and rear flip-up sights standard, when not using upgraded optics.