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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. File:BLC 15 pounder gun Mark I, II, IV barrel diagrams.jpg

    en.wikipedia.org/wiki/File:BLC_15_pounder_gun...

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  5. File:RBL12pdr8cwtBarrel&BreechDiagram.jpg - Wikipedia

    en.wikipedia.org/wiki/File:RBL12pdr8cwtBarrel&...

    English: Diagram of barrel and breech of British RBL 12 pounder 8 cwt field gun. This shows the "New Model" with the short 72-inch barrel. A : Barrel inner tube : originally of wrought-iron; made of steel in later 72-inch barrels.

  6. Springfield Armory M1A - Wikipedia

    en.wikipedia.org/wiki/Springfield_Armory_M1A

    The SOCOM 16 and SOCOM II are largely identical to the standard M1A, but feature a 16.25-inch (413 mm) barrel, rather than the standard model's 22-inch (560 mm) barrel. The specially designed muzzle brake is designed to reduce the increased recoil produced by the shorter barrel.

  7. Chiappa Rhino - Wikipedia

    en.wikipedia.org/wiki/Chiappa_Rhino

    The Chiappa Rhino is a series of revolvers produced by Italian manufacturer Chiappa Firearms.The Rhino's frames are CNC-machined from a solid block of high-tensile aluminium alloy and all internal parts are CNC-machined from steel.

  8. Ruger AR-556 - Wikipedia

    en.wikipedia.org/wiki/Ruger_AR-556

    The Ruger AR-556 is a semiautomatic AR-15 style rifle manufactured by U.S. firearms company Sturm, Ruger & Co. Introduced in 2014 as an entry-level AR-15 using a direct impingement action, with variants since being released such as the upgraded AR-556 MPR (multi-purpose rifle) in 2017 [1] and the AR-556 pistol in 2019.

  9. Built-up gun - Wikipedia

    en.wikipedia.org/wiki/Built-up_gun

    The first built-up gun was designed by French artillery officer Alfred Thiéry in 1834 and tested not later than 1840. Also about 1840 another one was made by Daniel Treadwell, and yet another one was produced by Mersey Iron Works in Liverpool according to the John Ericsson's design.