The Ed Brown Machined Memory Groove Beavertail grip safety for 1911s is fully machined from stock for top quality and precision fitting. Three grooves have been machined on to a raised pad to allow the user to "feel" the correct hand position as well as assist in depressing the safety. The design also allows for the hand to maintain a deeper grip on the gun for better stabilization and recoil control. Mfg: Ed Brown SPECS: Machined from stock. Fits Series 70 pattern frames ONLY. Requires .250 radius cut on frame.