This is the Promag .45ACP 50-round drum magazine for G21/30 pistols.

This drum magazine is perfect for your Glock 21, 30, and other double-stack Glock .45ACP pistols / PCCs! 

Featuring an advanced polymer construction, this Promag drum magazine features a 40-round capacity while maintaining a lightweight and durable design.

This Promag drum magazine also has a reloading crank for easy loading. No more hurt thumbs!

As always, Promag drums and magazines are manufactured & assembled in the USA!

Pick up a few of these Promag 45 ACP 40-round drum magazines for your Glock 21/30 pistol from The Mag Shack.

DISCLAIMER: This product is not manufactured, authorized, endorsed, or warranted by GLOCK. GLOCK does not warrant or represent that this product is compatible with GLOCK pistols.