ProMag DRMA1 50-Round Drum Magazine 308 Win AR-10 Black Polymer

The ProMag DRMA1 drum magazine transforms AR-10 platform rifles into high-capacity workhorses, delivering 50 rounds of .308 Winchester or 7.62x51mm NATO ammunition in a single reliable package. This drum magazine eliminates frequent reloading during extended range sessions and competitive shooting events.

What Makes This Different

Unlike standard 20-round magazines, the DRMA1 provides more than double the capacity while maintaining the same loading procedures. The DuPont Zytel polymer construction offers superior chemical resistance and dimensional stability compared to standard plastics. The drum's low-profile design sits closer to the rifle than many competing high-capacity options, preserving maneuverability.

Key Features

• 50-round capacity reduces reload frequency during extended shooting sessions
• DuPont Zytel polymer construction resists impact, chemicals, and temperature extremes
• Standard AR-10 magazine well compatibility - no modifications required
• Dual-caliber design accepts both .308 Winchester and 7.62x51mm NATO cartridges
• Spring-loaded follower system ensures consistent feeding pressure
• Matte black finish reduces glare and blends with tactical setups
• Loading door design allows topping off without full disassembly

The DRMA1 performs reliably in competitive shooting environments where rapid follow-up shots matter most. Range training becomes more efficient with fewer magazine changes, while the robust polymer construction handles the repeated loading cycles common in high-volume shooting. The magazine functions in various weather conditions, maintaining feed reliability in temperatures from -20°F to 140°F.

Technical Specs

• Capacity: 50 rounds
• Caliber: .308 Winchester/7.62x51mm NATO
• Material: DuPont Zytel polymer
• Color: Matte black
• Compatibility: AR-10 platform rifles
• Weight: Approximately 1.2 lbs empty
• Loading: Top-loading access door
• Country of Origin: USA

The ProMag DRMA1 represents proven engineering in high-capacity magazine design, backed by extensive field testing in competitive shooting circuits. Quality control standards ensure consistent dimensions and reliable function across production runs.