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Barrel length: R4 Patrol/Operator/Enhanced: 11.5 in (290 mm) ... The Remington R4 is a firearms platform based on the AR-15/M16/M4/M4A1 series designed and ...
ArmaLite Early ArmaLite AR-15 ultra-lightweight 'Hollywood' turned-down profile barrel, 1:14 twist only A1 : Also referred to as the "lightweight" or "pencil" profile. Government-specified barrel profile increased to between 0.675 and 0.575 inches
A patented AR-15-pattern is produced with a bolt design featuring a redesigned extractor intended to improve the extraction of cartridges under adverse conditions. The company also produces a redesigned bolt carrier intended to improve the reliable performance of the rifle's “internal piston” system by obtaining a similar timing sequence with 14.5-inch carbine-length barrels compared to 20 ...
The Close Quarter Battle Receiver (CQBR) [5] is a replacement upper receiver for the M4A1 carbine developed by the US Navy.. The CQBR features a 10.3 in (262 mm) length barrel (similar to the Colt Commando short-barreled M16 variants of the past) which makes the weapon significantly more compact, thus making it easier to use in, and around, vehicles and in tight, confined spaces.
The Colt AR-15 is a product line of magazine-fed, gas-operated, autoloading rifle manufactured by Colt's Manufacturing Company ("Colt") in many configurations. [1] The rifle is a derivative of its predecessor, the lightweight ArmaLite AR-15, an automatic rifle designed by Eugene Stoner and other engineers at ArmaLite in 1956.
Istiglal Ist-14.5 ; Type: Anti-materiel rifle: Place of origin: Azerbaijan: Service history; In service: 2008–present: Used by: See Users: Production history; Designer
[12] 3 different barrel length available: 11.5 in (CQB), 14.5 in (carbine), and 16 in (rifle). [13] DSAR-15PC: Modified DSAR-15P CQB. [5] Initially selected by the ROK Armed Forces to replace the K1A SMG, but the project was later cancelled. DSAR-15PQ: Modified DSAR-15PC with a quick-release barrel.
The .458 SOCOM (11.63×40mmRB) is a moderately large round designed to work in an AR-15 platform.This is achieved by installing a 458 bolt and barrel. The 300-grain (19 g) round offers a supersonic muzzle velocity of 1,900 ft/s (580 m/s) and 2,405 ft⋅lbf (3,261 J), [1] similar to a light .45-70 but with a much smaller case.