ProMag Glock 21 .45 ACP 40-Round Drum Magazine – G21/G41 Compatible

The ProMag Glock 21 drum magazine holds 40 rounds of .45 ACP, giving you more than triple the capacity of a standard Glock magazine. Designed for Glock 21 and Glock 41 pistols, this drum magazine features a clear body that lets you monitor your remaining ammunition at a glance. The drum format distributes weight more evenly than extended stick magazines, making it easier to handle during extended range sessions.

Constructed from impact-resistant polymer with steel internal components, this magazine uses a spring-tension winding mechanism and includes a loading tool. ProMag backs this drum with a lifetime warranty. Note: This magazine is prohibited in states with capacity restrictions including California, Colorado, Connecticut, Hawaii, Maryland, Massachusetts, New Jersey, New York, Vermont, and Washington D.C.

• Caliber: .45 ACP
• Capacity: 40 rounds
• Compatible Firearms: Glock 21, Glock 41
• Material: Polymer body with steel internals
• Features: Clear body for round count visibility, includes loading tool
• Warranty: Lifetime from ProMag
• State Restrictions: Not legal in CA, CO, CT, HI, MD, MA, NJ, NY, VT, DC