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  2. ArmaLite AR-30 - Wikipedia

    en.wikipedia.org/wiki/Armalite_AR-30

    The weight is 12 pounds empty. It includes a 26-inch chrome-moly barrel, 6-groove, RH 1:10-inch twist, and 48 inches overall length. The receiver is modified in octagonal form, drilled, and slotted for a scope rail. The bolt is a dual front locking lug. There is a Shilen standard single-stage trigger with approximately 5 lb. pull.

  3. 41xx steel - Wikipedia

    en.wikipedia.org/wiki/41xx_steel

    41xx steel is a family of SAE steel grades, as specified by the Society of Automotive Engineers (SAE). Alloying elements include chromium and molybdenum, and as a result these materials are often informally referred to as chromoly steel (common variant stylings include chrome-moly, cro-moly, CrMo, CRMO, CR-MOLY, and similar).

  4. .22 CHeetah - Wikipedia

    en.wikipedia.org/wiki/.22_Cheetah

    Two custom gunmakers, Shilen Rifle Company and Wichita Engineering, made rifles specifically for the cartridge. [7] The cartridge's 50-grain .22-caliber bullets have a muzzle speed upward of 4,300 ft/s (4,250 according to some [8]), and the cartridge is known for its long-range accuracy and velocity. [2]

  5. Rifling - Wikipedia

    en.wikipedia.org/wiki/Rifling

    Rifling of a 105 mm Royal Ordnance L7 tank gun Conventional rifling of a 90 mm M75 cannon (production year 1891, Austria-Hungary) Rifling in a GAU-8 autocannon. Rifling is the term for helical grooves machined into the internal surface of a firearms's barrel for imparting a spin to a projectile to improve its aerodynamic stability and accuracy.

  6. Bushmaster XM-15 - Wikipedia

    en.wikipedia.org/wiki/Bushmaster_XM-15

    Bushmaster Dissipator Model XM-15 rifle with aftermarket handguards The Bushmaster XM-15 used by the D.C. snipers during their attacks in October 2002. The Bushmaster XM-15 series (or XM15 [3]) is a line of AR-15 style semi-automatic rifles and carbines manufactured by Bushmaster Firearms International, LLC. [2]

  7. Sako TRG - Wikipedia

    en.wikipedia.org/wiki/Sako_TRG

    The Valmet Sniper M86 was used as a basis for the Sako TRG sniper rifle line. Even though the TRG-21 obtained its origins from the successful Sako TR-6 target rifle and 1984–1986 development work for the hardly produced Valmet Sniper M86 rifle by the former Finnish state firearms company Valmet which merged with Sako, the 4.7 kg (10 lb 6 oz) TRG-21 was designed as a result of a thorough ...

  8. Heckler & Koch G3 - Wikipedia

    en.wikipedia.org/wiki/Heckler_&_Koch_G3

    The rifles were individually selected from the G3 production line for outstanding accuracy during test-firing and then modified. G3SG/1 rifles got a heavy, dual-stage buffer, fixed mounted, Zeiss Diavari-DA 1.5-6×36 power telescopic sight and STANAG claw mount assembly mounted.

  9. Multiple-barrel firearm - Wikipedia

    en.wikipedia.org/wiki/Multiple-barrel_firearm

    Remington Model 95 with pearl grips and barrels open for reloading COP .357 Magnum derringer. The original Philadelphia Deringer was a small single-barrel, muzzleloading caplock pistol designed by Henry Deringer (1786–1868) and produced from 1852 to 1868, and was a popular concealed carry single-shot handgun of the era widely copycatted by competitors. [6]