PRODUCT DESCRIPTION PRODUCT SPECIFICATIONS Sig Sauer Factory Original Replacement Part. Body Material: Steel Spring Material: Steel Follower Material: Polymer Baseplate Material: Polymer Finish: Black Magazine Caliber: .40 S&W /.357 Sig Magazine Capacity: 10 rds Magazine Finish: Black Oxide Steel CA Prop 65: Yes Compliance Item Type: Magazines Package Quantity: 1 Compliance Magazine Type: Handgun Magazine Weapon Mfg Model: Sig SP2022 Weapon Mfg: Sig Sauer In-Store: No