Magpul MOE 1911 Grip Panels Constructed of heavy-duty reinforced polymer; unique Diamond-shaped Cross section to prevent twisting in the hand Aggressive magazine release cut-out; positive anti-slip texture; Compatible with ambidextrous safeties Fits full size frame 1911S and copies with standard grip screw bushings Total weight: 1.1 ounces; maximum thickness: 0.25 inches Made in USA