The ProMag AR-15 5.56x45mm 65-round drum magazine is a high-capacity option for shooters who want extended trigger time between reloads. Built around a proprietary DuPont Zytel-based polymer body, this drum is engineered to handle the demands of the range, competition, or training scenarios where capacity matters. The over-molded stamped steel feed lips and magazine catch provide the durability needed for repeated use, while an injection-molded follower and heat-treated chrome silicon wire spring keep rounds feeding reliably downrange.

Drum magazines occupy a unique role in AR-15 setups: they're not practical for hunting or tactical carry, but they excel at high-round-count range sessions and training events where you'd rather spend time shooting than swapping mags. A witness window lets you monitor ammunition levels without disassembly. The all-polymer construction keeps weight down compared to steel alternatives, making it less fatiguing to handle during extended shooting.

This is a made-in-USA piece that fits standard AR-15 receivers chambered in 5.56x45mm or .223 Remington. Like all drum magazines, it benefits from regular cleaning and inspection—keep the feed lips and catch surfaces free of debris for consistent operation. If you run suppressed or shoot a lot of subsonics, test it thoroughly to confirm reliable feeding with your specific setup and ammunition.

The ProMag AR-15 5.56x45mm 65-round drum magazine is a high-capacity option for shooters who want extended trigger time between reloads. Built around a proprietary DuPont Zytel-based polymer body, this drum is engineered to handle the demands of the range, competition, or training scenarios where capacity matters. The over-molded stamped steel feed lips and magazine catch provide the durability needed for repeated use, while an injection-molded follower and heat-treated chrome silicon wire spring keep rounds feeding reliably downrange.

Drum magazines occupy a unique role in AR-15 setups: they're not practical for hunting or tactical carry, but they excel at high-round-count range sessions and training events where you'd rather spend time shooting than swapping mags. A witness window lets you monitor ammunition levels without disassembly. The all-polymer construction keeps weight down compared to steel alternatives, making it less fatiguing to handle during extended shooting.

This is a made-in-USA piece that fits standard AR-15 receivers chambered in 5.56x45mm or .223 Remington. Like all drum magazines, it benefits from regular cleaning and inspection—keep the feed lips and catch surfaces free of debris for consistent operation. If you run suppressed or shoot a lot of subsonics, test it thoroughly to confirm reliable feeding with your specific setup and ammunition.