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A Beta C-Mag undergoes field testing on an M4 carbine. The Beta C-Mag is a 100-round capacity drum magazine manufactured by the Beta Company. It was designed by Jim Sullivan and first patented in 1987 and has been adapted for use in numerous firearms firing the 5.56×45mm NATO, 7.62×51mm NATO, and 9×19mm Parabellum cartridges. [1]
Mark 5: Updated variant of the Mark 4 with a folding stock, Picatinny rails and M16 STANAG 4179 magazine well that will accept 30-round box magazines and the 100-round Beta C-Mag drum. [12] STK also developed a vehicle-mounted variant of the weapon for use on the Bronco All Terrain Tracked Carrier [13] and on the Spider Light Strike Vehicle.
Magpul has been granted a patent [47] for a STANAG-compatible casket magazine, [48] and such a magazine was also debuted by SureFire in December 2010, and is now sold as the MAG5-60 and MAG5-100 high capacity magazine (HCM) in 60 and 100 round capacities, respectively, in 5.56mm for AR-15 compatible with M4/M16/AR-15 variants and other firearms ...
The ArmaLite AR100 is a 5.56×45mm NATO caliber short-stroke piston gas-operated, 5.56×45mm NATO assault rifle fed from 30- round and 100-round drum magazines that eject from the magazine insert when empty and are discarded during a firefight.
As a result, drum magazines became more common in the civilian market in the United States, although they are far less common than standard, lower-capacity, typically 30 round, box magazines. [2] As of 2019, about six manufacturers produced drum magazine in the United States, retailing for about $100 each. [2]
The AR-15 was first revealed by Eugene Stoner at Fort Benning in May 1957. [52] The AR-15 used .22-caliber bullets, which destabilized when they hit a human body, as opposed to the .30 round, which typically passed through in a straight line.
The M1921 Thompsons could accommodate either 20-round box magazines or 50-round cylindrical drum magazines; the latter were known as "L drums" because "L" is the Latin numeral for 50. [10] A 100-round "C drum" magazine (the letter standing for the Roman numeral for 100) was available, but weighed more than eight pounds and pushed the total ...
ArmaLite AR-15 with the charging handle located on top of the upper receiver, protected within the carrying handle and a 25-round magazine. 1973 Colt AR-15 SP1 rifle with "slab side" lower receiver (lacking raised boss around magazine release button) and original Colt 20-round magazine.