This is the RWB .45 ACP 40-round drum magazine for Glock 21, 30 pistols. 

Maximize your capacity with this 40-round drum magazine from RWB! 

Constructed from durable polymer and featuring a steel insert, this magazine is ready to tackle any task at hand. Keeping it running reliably through those tasks is an anti-tilt polymer follower. 

With a built-in loading mechanism and the ability to store fully loaded, this magazine checks all of the boxes!

Stay locked and loaded by ordering one of these 40-round drum magazines today!

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.