These models of Pachmayr's Signature Grips also feature the patented full wrap-around design, are also made from rubber specially formulated for use on semi-automatic pistols, but are supplied without backstraps so they can be used on pistols such as the Government .45 models that utilize grip safety mechanisms. Features: - Steel Inserts - Ideal for models with grip safetys - Classic look. #02545 Colt Officer's Model