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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. List of 3D-printed weapons and parts - Wikipedia

    en.wikipedia.org/wiki/List_of_3D-printed_weapons...

    .22 caliber barrel liner, spring, fasteners .22 LR: A mostly printed .22 LR pistol. Uses a DIY metal barrel, firing pin, and spring. Simple and extremely cheap, designed to cost $5-$8. Commonly created to be sold at gun buybacks for profit. [34] A large number of remixes and variants of this design have been created. The Urutau [35] [36] [37 ...

  4. Blank (cartridge) - Wikipedia

    en.wikipedia.org/wiki/Blank_(cartridge)

    For military applications, blanks are typically used with a special blank-firing adaptor in the firearm that constricts the barrel, keeping chamber pressures created by the blank high enough and for long enough to cycle the firearm's gas-operated action. In the case of non-crimped blanks, it also serves to pulverise the plug to prevent it ...

  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. Accurizing - Wikipedia

    en.wikipedia.org/wiki/Accurizing

    While standard rifle barrels taper from breech to muzzle, high precision rifles will often use a barrel with far less taper, called a heavy barrel, sometimes leaving the barrel cylindrical all the way to the muzzle, called a bull barrel. Either technique greatly increases the stiffness of the barrel by enlarging the average diameter, but this ...

  7. List of military headstamps - Wikipedia

    en.wikipedia.org/wiki/List_of_military_headstamps

    Founded originally in Oslo in 1946, then moved to Aurskog in 1955. They invented and marketed the first fully plastic-hulled blank ammunition in 1953 and worked with other manufacturers to develop similar rounds. The headstamp has the NATO symbol (+) at 12 o'clock, 2-digit year at 6 o'clock, BF at 9 o'clock, and 2-digit batch code at 3 o'clock.

  8. Stock (firearms) - Wikipedia

    en.wikipedia.org/wiki/Stock_(firearms)

    The anatomy of a gunstock on a Ruger 10/22 semi-automatic rifle with Fajen thumbhole silhouette stock. 1) butt, 2) forend, 3) comb, 4) heel, 5) toe, 6) grip, 7) thumbhole A gunstock or often simply stock, the back portion of which is also known as a shoulder stock, a buttstock, or simply a butt, is a part of a long gun that provides structural support, to which the barrel, action, and firing ...

  9. Glossary of firearms terms - Wikipedia

    en.wikipedia.org/wiki/Glossary_of_firearms_terms

    Caliber/calibre: In small arms, the internal diameter of a firearm's barrel or a cartridge's bullet, usually expressed in millimeters or hundredths of an inch; in measuring rifled barrels this may be measured across the lands (.303 British) or grooves (.308 Winchester) or; a specific cartridge for which a firearm is chambered, such as .45 ACP or .357 Magnum.

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