CNC machined from hardened, billet stainless steel, the radiused button of the Bullet Proof Concealment Magazine Release is slightly extended 1/16" over a stock part for fast, smooth operation and is equally suited for competition or carry. Perfectly checkered at 40 LPI for non-slip activation and engineered to maximum drop-in tolerances, this easy upgrade will improve the feel and performance of any 1911 pattern pistol. Minor fitting may be required. Magazine catch lock and spring not included. Mfg: Wilson Combat SPECS: CNC Machined from Hardened Billet Stainless Steel.