Hogue’s 1911 Government G10 grip panels have been milled to accommodate an ambidextrous safety – no modifications are necessary. HARDWARE: These grips are designed to work with factory hardware. 1911 Government grip screw hole spacing is 3 1/16". Grip screws should be tightened to 12 in/lbs of torque with a correct fitting 3/32" hex driver. Mfg: Hogue