ProMag magazine bodies are constructed of polymer for strength. The springs are precision wound using heat-treated chrome silicon wire. Bases and followers are injection molded from polymers selected for their durability. The result is quality, consistency, durability and reliability. This 30-round drum magazinef its Sig Sauer P365 9mm pistols. The drum housing constructed of a proprietary DuPont Zytel™ based polymer, while the magazine upper tower has full length steel internal insert stamped and welded like the factory magazine. Injection molded magazine follower, and the magazine spring formed from heat treated stainless steel, and everything is made in USA.

Specifications: Caliber: 9mm, Capacity: 30 Rounds, Body Material: Polymer, Color: Black

This is for one 30 round drum magazine for 9mm caliber Sig P365 models.