ProMag AR-15 120-Round Drum Magazine 5.56mm
High-capacity 120-round drum magazine for AR-15 rifles in 5.56mm/.223. Features stamped steel feed lips, polymer body, and heat-treated spring. Made in USA.
ProMag AR-15 120-Round Drum Magazine
When you need serious firepower downrange, capacity matters. This 120-round drum magazine transforms your AR-15 into a formidable platform for extended shooting sessions, competition, or tactical training.
Design and Construction
ProMag engineered this drum with practical shooters in mind. The magazine body is constructed from a proprietary DuPont Zytel-based polymer—a material chosen for its durability and reliability under demanding conditions. The injection-molded follower ensures consistent round feeding, while the heat-treated chrome silicon spring maintains proper tension throughout the magazine's service life.
Feeding Reliability
The over-molded stamped steel feed lips and magazine catch are where reliability lives. These hardened components resist wear and deformation, critical factors when you're running high round counts. The steel-on-polymer design balances durability with the lightweight advantages of modern materials.
Compatibility
This drum magazine fits standard AR-15 platforms chambered in 5.56mm or .223 Remington. It's a direct-fit solution—no modifications required.
Made in the USA
ProMag manufactures this magazine domestically, supporting American manufacturing standards and quality control.
Whether you're running drills at the range or preparing for competition, this 120-round capacity gives you more time on target and fewer magazine changes.
