MAGAZINE G31 357SIG 15RD PKG PACKAGED Manufacturer Model Number: MF31015 Manufacturer: GLOCK Model: G31 Magazine Caliber: 357 Sig Type: Accessory-Magazines Item Type: Accessory Firearm / Accessory Capacity: 15 rd. Finish: Black Polymer Shipping Weight: 0.21 Feature: 15rd Mag for Glock 31 357 Sig Feature: Blister Package Optic Adjustable Objective: false Optic Reticle Illuminated: false