ProMag HECA7 .45 ACP 20-Rd Polymer Magazine for H&K USC Carbine - Black

The ProMag HECA7 is a high-capacity 20-round replacement magazine purpose-built for the H&K USC .45 ACP carbine. Designed as an extended-duty spare, this magazine gives USC owners the on-gun round count and the reliable feeding they want for range sessions, training, and extended shooting days.

The magazine body is molded from a proprietary DuPont Zytel-based polymer for light weight and impact resistance, paired with an injection-molded follower for smooth and consistent round presentation. The black finish matches the factory USC carbine, and the 20-round capacity delivers substantially more on-gun rounds than standard pistol magazines.

Designed and manufactured in the USA, the HECA7 drops straight into the H&K USC .45 ACP carbine magazine well and feeds without modification, making it a straightforward upgrade or spare for any USC shooter.