ProMag DRMA1 50-Round Drum Magazine (.308 Win) Black

The ProMag DRMA1 is a 50-round drum magazine intended for rifles chambered in .308 Win / 7.62x51mm NATO and built to accept LR-308 (DPMS) or SR-25 pattern magazines. The body is molded from DuPont Zytel-based polymer and features over-molded stamped steel feed lips and catch, an injection-molded follower, and a heat-treated stainless steel spring. The design is a drum-style replacement or spare magazine for compatible AR-308/AR-10 pattern rifles and is produced in the USA.

Key Specifications

• The magazine holds 50 rounds.
• Caliber compatibility listed as .308 Win / 7.62x51mm NATO.
• Fitment is described for LR-308 (DPMS) and SR-25 pattern AR-308/AR-10 rifles.
• The design is stated as not compatible with Armalite pattern magazines.
• The magazine body is constructed of DuPont Zytel polymer.
• Feed lips and magazine catch are over-molded stamped steel.
• The follower is an injection-molded magazine follower.
• The spring is a heat-treated stainless steel magazine spring.
• The exterior finish is black.
• Product weight listed as 3.085 (value as provided in source data).

The DRMA1 provides a high-capacity option for shooters who use LR-308/SR-25 pattern rifles and value a polymer-bodied, hybrid-design magazine with steel feed interface components. Its construction and spring design aim to deliver reliable feeding in applications where extended capacity is required.