PROMAG DRUM SW SHIELD 9MM 30RD BLK POLYMER

30-round drum magazine – Fits the Smith & Wesson Shield™ 9mm pistols – Drum housing constructed of a proprietary DuPont Zytel™ based polymer – Magazine upper tower has full length steel internal insert stamped and welded like the factory magazine – Injection molded magazine follower – Magazine spring formed from heat treated stainless steel – Made in USA