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  2. 5.56×45mm NATO - Wikipedia

    en.wikipedia.org/wiki/5.56×45mm_NATO

    Cartridge, Caliber 5.56 mm Ball, Enhanced 5.56 mm Carbine, MK318 MOD 0: 5.56×45mm 62-grain Open-Tipped Match Boat-Tail cartridge. Optimized for use with 14-inch barreled weapons like the M4A1 Carbine and MK16 SCAR and designed to penetrate light barriers like windshields or car doors with no loss of accuracy or damage.

  3. M16 rifle - Wikipedia

    en.wikipedia.org/wiki/M16_rifle

    United States Army Special Forces personnel filed battlefield reports lavishly praising the AR-15 and the stopping power of the 5.56 mm cartridge, and pressed for its adoption. [44] The damage caused by the 5.56 mm bullet was originally believed to be caused by "tumbling" due to the slow 1 turn in 14-inch (360 mm) rifling twist rate. [67]

  4. Caliber - Wikipedia

    en.wikipedia.org/wiki/Caliber

    While modern firearms are generally referred to by the name of the cartridge the gun is chambered for, they are still categorized together based on bore diameter. [citation needed] For example, a firearm might be described as a "30 caliber rifle", which could accommodate any of a wide range of cartridges using a roughly 0.30 inches (7.6 mm) projectile; or as a "22 rimfire", referring to any ...

  5. Table of handgun and rifle cartridges - Wikipedia

    en.wikipedia.org/wiki/Table_of_handgun_and_rifle...

    Common rifle cartridges, from the largest .50 BMG to the smallest .22 Long Rifle with a $1 United States dollar bill in the background as a reference point.. This is a table of selected pistol/submachine gun and rifle/machine gun cartridges by common name.

  6. .223 Remington - Wikipedia

    en.wikipedia.org/wiki/.223_Remington

    In September 1963, the .223 Remington cartridge was officially accepted and named "Cartridge, 5.56 mm ball, M193". The following year, the ArmaLite AR-15 was adopted by the United States Army as the M16 rifle, and it would later become the standard U.S. military rifle. The specification included a Remington-designed bullet and the use of ...

  7. XM214 Microgun - Wikipedia

    en.wikipedia.org/wiki/XM214_Microgun

    An 88 by 10 inch (224 x 25 cm) 5.56mm Microgun Pod was also developed for external use on light aircraft and helicopters. The unit had an ammunition capacity of 1,500 to 3,500 rounds and a loaded weight of 186 to 300 pounds (84 to 136 kg). The feeding system was linkless via a helical drum and had a nominal rate of fire of 6,000 rpm.

  8. List of 5.56×45mm NATO firearms - Wikipedia

    en.wikipedia.org/wiki/List_of_5.56×45mm_NATO...

    5.56×45mm NATO variant of QBZ-95. Norinco AK-2000: Assault rifle China: 2000s-present Copy of the AK-101. QBZ-03: Assault rifle China: 2003–present Export variant is chambered in 5.56×45mm NATO. QBU-97A: Semi-automatic bullpup sniper rifle China: 1997–present 5.56×45mm NATO variant of QBU-88. Galil Córdova: Assault rifle Colombia: 2015 ...

  9. .22 caliber - Wikipedia

    en.wikipedia.org/wiki/.22_caliber

    .22 caliber, or 5.6 mm, refers to a common firearms bore diameter of 0.22 inch (5.6 mm) in both rimfire and centerfire cartridges. Cartridges in this caliber include the very widely used .22 Long Rifle and .223 Remington/5.56×45mm NATO. .22 inch is also a popular air gun pellet caliber, second only to the ubiquitous .177 caliber.