ProMag Black/FDE Endplate Sig Sauer P320 9mm Luger Handgun Magazine - 21 Rounds - Magazine body constructed of heat treated steel with black oxide finish. The magazine has an injection molded magazine follower and magazine spring formed from heat treated chrome silicone wire. Fits Sig Sauer P320 9mm Pistol. FEATURES: Model: SIG-A20-FDE Caliber: 9mm Luger Capacity: 21 Rounds Color: Black with Flat Desert Earth (FDE) Endplate Frame: P320 Made in USA