ProMag DRMA37 40-Round Drum Mag for Glock 21/30 (.45 ACP)

This ProMag DRMA37 drum magazine provides a high-capacity feeding option for Glock pistols designated for .45 ACP. It is supplied in a black DuPont Zytel polymer housing and uses an injection-molded follower with a heat-treated spring. The design incorporates over-molded stamped steel feed lips and a magazine catch and is manufactured in the USA.

Key Specifications

• The capacity is 40 rounds.
• The magazine is chambered for .45 ACP.
• Compatible with Glock models 21 and 30.
• The drum housing is constructed of DuPont Zytel-based polymer.
• The finish is black.
• The magazine spring is formed from heat-treated stainless steel wire.
• The follower is injection-molded.
• The feed lips and magazine catch are over-molded stamped steel.
• The listed weight is 1.9.
• The package dimensions are 3.50 x 6.50 x 16.25.

Designed for extended range sessions and recreational shooting where higher capacity is desired, the DRMA37 offers familiar Glock compatibility with robust polymer construction and steel wear points. Its combined polymer and steel components aim to balance weight and durability for sustained use while retaining straightforward installation and operation with supported Glock models.