ProMag DRMA34: Made in USA, the Glock compatible drum magazine is constructed of DuPont Zytel based polymer with a full length steel internal insert stamped and welded like the factory magazine. It also has an injection molded magazine follower and a heat treated stainless steel spring.
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.