ProMag Industries Drum Magazine, 40 S&W, 50 Round, Fits Glock 22/23/27, Polymer, Black DRM-A19 DRMA19

Owners of .40 S&W Glock pistols who feel left out of the extended magazine craze on the market that seems to focus on only 9mm guns now have a new option in the form of this Glock 22/23 Drum Magazine. Just like the company's 9mm option, this drum holds 50 rounds of .40 S&W.

Each Glock 22/23 Drum Magazine is built using a proprietary Zytel polymer, which gives it added strength and durability, so it'll last through years of range time. To reinforce this already-durable design, the magazine features an upper tower constructed with a full-length steel insert that's stamped and welded, just like those found on OEM Glock magazines.

This Glock 22/23 Magazine also includes a heat-treated magazine spring made from stainless steel, as well as an injection-molded magazine follower. The magazines are made in the USA and feature an all-black finish.