Fusion 1911 Colt non-gunsmith style in stainless steel for Mil Spec style frames. Designed for Mil Spec and A-1 style pistols, and made for people who do not want to mill / alter their frame for a High-Ride beavertail grip safety installation. Made for the 1911 Colt, Springfield, RIA, A1, Mil Spec, and 1911 Mil Spec Clones.. Etc. Standard grip safety fitting of paw may be necessary. These are high quality professional grade.