Promag Sig 9mm Luger P365 12Rd Blued Steel Detachable Made In The USA, The Sig P365 Mag Is constructed Of Heat-Treated Steel With a Blued Finish, Injection Molded Mag Follower And Chrome Silicone Wire. Caliber: 9mm Luger Capacity: 12 Finish: Blued Model: Sig Material: Steel Model Fit: P365 Brand Fit: Sig Sauer Capacity: 12 Manufacturer: Promag Mfg Number: SIGA17 Model: Sig