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  2. Bushmaster Firearms International - Wikipedia

    en.wikipedia.org/wiki/Bushmaster_Firearms...

    Bushmaster Firearms originally produced their 'First Generation' rifle using an aluminum lower receiver and a stamped steel upper receiver. This first-generation model used a long-stroke gas piston operating system. The recoil spring was within the upper barrel gas system compared to the AR-15/M-16, where the recoil spring is within the butt stock.

  3. .450 Bushmaster - Wikipedia

    en.wikipedia.org/wiki/.450_Bushmaster

    The .450 Bushmaster was developed for big game hunting with modern rifles. The .450 Bushmaster (11.48x43mmRB) is a rifle cartridge developed by Tim LeGendre of LeMag Firearms, and licensed to Bushmaster Firearms International. The .450 Bushmaster is designed to be used in standard M16s and AR-15s, using modified magazines and upper receiver ...

  4. List of AR platform cartridges - Wikipedia

    en.wikipedia.org/wiki/List_of_AR_platform_cartridges

    The rebated rim dimensions exactly match the 6.8mm Remington SPC case, allowing the use of the 6.8mm SPC bolt-face of an AR-15, but the case has a base diameter of .4400" and cannot be reformed from any other existing case. The 400 LGND uses .4005" jacketed rifle bullets. 450 Bushmaster, Uses .284 Winchester cases. Cut the length to 1.700" to ...

  5. Bushmaster XM-15 - Wikipedia

    en.wikipedia.org/wiki/Bushmaster_XM-15

    The standard XM-15 has a forged 7075T6 aircraft-grade aluminum upper and lower receiver. Barrels of XM-15 firearms have a heavy profile and are hard chrome-lined 4150 alloy steel or 416 stainless steel. [2] [4] In Bushmaster's 2016 sales brochure, all new-production XM-15s are stated to be supplied with a 4150 steel barrel. [5]

  6. Desert Tech MDR - Wikipedia

    en.wikipedia.org/wiki/Desert_Tech_MDR

    On January 9, 2020, Desert Tech announced the MDRx Rifle was available for sale. [ 23 ] On January 28, 2021, the MDRX Micron conversion kit was announced that allowed the purchase of a 11.5" 5.56/.223 Wylde barrel, replacement hand guard, ejector plates, a new 'Raiden' flash hider, and bolt replacement for a side eject bullpup with a total ...

  7. .450 Marlin - Wikipedia

    en.wikipedia.org/wiki/.450_Marlin

    Test barrel length: (SAAMI) 24 inches (610 mm) Source (s): Buffalo Bore Ammunition, [2] Hornady Ammunition, [3] The .450 Marlin is a firearms cartridge designed as a modernized equivalent to the .45-70 cartridge. It was designed by a joint team of Marlin and Hornady engineers headed by Hornady's Mitch Mittelstaedt, [4] and was released in 2000 ...

  8. Adaptive Combat Rifle - Wikipedia

    en.wikipedia.org/wiki/Adaptive_Combat_Rifle

    The Adaptive Combat Rifle (ACR) is a modular assault rifle formerly designed by Magpul Industries of Austin, Texas, and known initially as the Masada.. In late January 2008, Bushmaster Firearms International entered into a licensing agreement with Magpul whereby Bushmaster would take over production, future development, and sales of the Masada. [5]

  9. Bushmaster M17S - Wikipedia

    en.wikipedia.org/wiki/Bushmaster_M17S

    Left side. The Bushmaster M17S is a semi-automatic rifle that uses a gas-operated, rotating bolt. The design takes the operating system of the Armalite AR-18 and moves the pistol grip forward in a manner similar to the British SA80. Instead of the sheet metal receiver of the AR18 and SA80, the Bushmaster M17S uses an extruded 7075-T6 aluminum ...