FosTecH 20-Round .50 BMG Drum Magazine – Fits Barrett M82A1 & M107A1 – Black – 1501

The FosTecH 20-Round .50 BMG Drum (1501) is an absolute powerhouse of engineering, designed to double the standard capacity of the world’s most iconic semi-automatic anti-materiel rifles. This isn't just an accessory; it is a specialized piece of military-grade hardware crafted to feed the intense energy of the .50 BMG cartridge. In 2026, FosTecH remains the only manufacturer to successfully master the physics required to reliably cycle 20 rounds of .50 caliber "mayhem" in a drum format. CNC-machined from aircraft-grade billet aluminum and finished in a tactical matte black nitride, this drum is built to withstand the brutal recoil and mechanical forces of the Barrett M82A1 and M107A1 platforms.

Engineering a drum for the .50 BMG is a monumental task due to the weight and length of the cartridge. The FosTecH 1501 utilizes a precision-tuned internal clock spring and high-strength internals to ensure a smooth, consistent feed rate without the hiccups or jams common in lesser high-capacity designs. Despite its massive capacity, the drum is designed to be user-serviceable and features a rugged exterior that resists impacts and environmental debris. Proudly Made in the USA, this drum is the definitive "force multiplier" for shooters who want to push their Barrett to its absolute limits, allowing for extended strings of fire that were previously impossible with 10-round stick magazines.

Includes: (1) FosTecH 20-Round .50 BMG Drum Magazine.

Key Features

20-Round Capacity: Doubles the firepower of the factory 10-round magazine, turning your Barrett into the ultimate high-volume long-range platform.
Billet Aluminum Construction: Machined from solid aerospace-grade aluminum for maximum structural integrity—will not "swell" or deform under pressure.
Military-Grade Reliability: Engineered with a proprietary internal drive system specifically designed to handle the 600+ grain weight of .50 BMG projectiles.
Black Nitride Finish: A deep, wear-resistant matte finish that matches the tactical aesthetic of the Barrett M82/M107 series.
Direct Fitment: Designed to lock directly into the factory magazine well of the Barrett M82A1 and M107A1 semi-auto rifles.
American Grit: Designed, tested, and manufactured in the United States by the innovators at FosTecH.