ProMag Magazine Sig Sauer P320 9mm 10-Round Blue Steel

ProMag magazine for the Sig P320 is constructed of high carbon heat-treated steel and TIG-welded 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. Features Fits Sig Sauer P320 9mm pistol Magazine body constructed of heat treated steel with black oxide finish Injection molded magazine follower Magazine spring formed from heat treated chrome silicone wire