it fits 1911 holsters. I did a counterbore of its muzzle, like the High Standards featured, and from sitting braced, I printed several 5 shot groups of about 1.5". at 50 yds. 3" was easy, from the Weaver, at 50 yds. Had to add a Clark trigger, with the overtravel screw, tho. The latter is a huge help at hitting.