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Rate of fire may also be affected by ergonomic factors. For rifles, ease-of-use features such as the design of the bolt or magazine release can affect the rate of fire. For artillery pieces, a gun on a towed mount can usually achieve a higher rate of fire than the same weapon mounted within the cramped confines of a tank or self-propelled gun ...
The weight of the cyclic components of the gun has been doubled (while retaining the weapon's weight at less than 8 pounds). Compared to the standard M4, which in automatic fires 700–950 rounds a minute, the rate of fire of the ArmWest, LLC M4 is heavily reduced both to save ammunition and reduce barrel wear.
Compared to the M4, the M9 had 50% more muzzle velocity (3,000 fps) from a 78-inch barrel (vs. 65-inch in M4), and was twice as heavy (120 vs. 55 pounds for the barrel alone); the whole M9 weighed 405 pounds vs. 213 of the M4. The cyclic rate was the same. [9]
It had a cyclic rate of fire of 120 rounds per minute but its top loaded 10 round clip was slow to change, which meant that although easy to wield it had a limited time on target and slow practical rate of fire. The first 20 guns were delivered in December 1917 and by the time of the armistice, there were 150 in service. [1]
The roller-delayed blowback MG 45 operation mechanism differed from the recoil-operated, roller-locked MG 42 in that it did not completely lock its breech before firing, increasing its cyclic rate of fire and simplifying its construction. Compared to the MG 42 the MG 45 used steel of lesser quality, the weight was reduced to 9 kg (19.8 lb ...
Introduced in 1996. Developed by Eugene Stoner and Reed Knight Jr.. Manufactured by Knight's Armament Company (KAC). Simplified derivative of the ARES LMG-1, lacking the magazine feed device. Has shorter barrel and M4 carbine type retractable stock for Close Quarters Battle (CQB) and Picatinny rails for sights/grips/bipods etc. [citation needed]
The Barrett M468 was a variant of the M4 Carbine, rechambered for a heavier and larger 6.8mm bullet for increased terminal performance. The designation of M468 stands for an M4 carbine chambered for the 6.8mm SPC cartridge. It was an attempt to create an optimal Special Operations close-to-medium range carbine for Close Quarter Battle (CQB).
An export variant of the MG4 that has been slightly modified and is slightly lighter. The letter "E" in the designation stands for "Export". It has a different gas assembly that reduces the cyclic rate of fire. In 2007, the Spanish Army adopted this variant as their standard light machine gun.