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  2. 5.56×45mm NATO - Wikipedia

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

    The specification includes a Remington-designed bullet and the use of IMR4475 powder which resulted in a muzzle velocity of 3,250 ft/s (991 m/s) and a chamber pressure of 52,000 psi. [5] In 1970, NATO members signed an agreement to select a second, smaller caliber cartridge to replace the 7.62×51mm NATO cartridge. [12]

  3. M4 carbine - Wikipedia

    en.wikipedia.org/wiki/M4_carbine

    The M4, and its variants, is a lightweight 5.56×45mm NATO (and .223 Remington) caliber, gas-operated, magazine-fed, air-cooled selective fire AR-15-pattern firearm. Its gas operation consists of an internal piston (often incorrectly referred to as direct impingement ), [ 56 ] a rotating bolt, and bolt carrier that reciprocates into a receiver ...

  4. M16 rifle - Wikipedia

    en.wikipedia.org/wiki/M16_rifle

    The barrel rifling was revised to a faster 1:7 (178 mm) twist rate to adequately stabilize the new 5.56×45mm NATO SS109/M855 ball and L110/M856 tracer ammunition. The heavier longer SS109/M855 bullet reduced muzzle velocity from 3,260 ft/s (994 m/s), to about 3,110 ft/s (948 m/s) [195]

  5. Heckler & Koch G36 - Wikipedia

    en.wikipedia.org/wiki/Heckler_&_Koch_G36

    5.56×45mm NATO: Action: Short-stroke piston, closed rotating bolt: Rate of fire: 750 rounds/min: Muzzle velocity: 920 m/s (3,018 ft/s) Effective firing range: 600 metres (660 yd) Maximum firing range: 2,860 metres (3,130 yd) Feed system: 30-round proprietary detachable box magazine 100-round C-Mag drum magazine STANAG magazines (with optional ...

  6. M27 Infantry Automatic Rifle - Wikipedia

    en.wikipedia.org/wiki/M27_Infantry_Automatic_Rifle

    5.56×45mm NATO: Action: ... Sustained rate: 36 rounds/min; Muzzle velocity: 2900 ft/s (884 m/s) Effective firing range ... It is a 3.5×35 machine gun optic that has ...

  7. AK-19 - Wikipedia

    en.wikipedia.org/wiki/AK-19

    Muzzle velocity: 910 m/s (3,000 ft/s) Effective firing range: 500 m (550 yd) ... The AK-19 is a 5.56×45mm NATO assault rifle designed by Kalashnikov Concern for the ...

  8. Table of handgun and rifle cartridges - Wikipedia

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

    MV: Muzzle velocity, in feet-per-second; ME: Muzzle energy, in foot-pounds; P: Momentum, in pound (force) (lbf) times seconds. [1] A guide to the recoil from the cartridge, and an indicator of bullet penetration potential. The .30-06 Springfield (at 2.064 lbf-s) is considered the upper limit for tolerable recoil for inexperienced rifle shooters ...

  9. Muzzle velocity - Wikipedia

    en.wikipedia.org/wiki/Muzzle_velocity

    In some instances, the powder may not have even been fully burned in guns with short barrels. So, the muzzle velocity of a 2-inch (51 mm) barrel is less than that of a 4-inch (100 mm) barrel, which is less than that of a 6-inch (150 mm) barrel. Large naval guns will have high length-to-diameter ratios, ranging between 38:1 to 50:1. This length ...