accurized a couple of Colt .22-45 units

to 3-3.5" groups at 50 yds, Lee Machine Rest, with their "favored" ammo. Fit match bushings and tightened the slide-frame fit. The Ciener .22-45 unit, out of the box, groups 3" at 50 yds, sometimes a bit better. However, a steel barrel is rubbing on an aluminum slide, so how long it will continue to group well is something I can't say.