1911 Frame Grip Safety vs Beavertail

The standard GI 1911 frame can support both GI and Beavertail grip safeties. Depending on the style of 1911 your building. When using a Beavertail grip safety you must also change the hammer to shorter length. To shape the frame to a .250 radius you will need a beavertail filing jig or a mill. To use a file and do the shaping by hand just follow the jig with a file to remove the material until the beavertail fits and swings freely.