WTT a pre war Colt factory .22LR conversion kit. The kit is complete but has no box and instruction sheet. I believe it has what they call the Stevens rear sight. The number on the top of the slide in front of the sight is U7XX putting the year of manufacture at 1939. It's in excellent shape. I am interested in Colt pistols and revolvers, Smith & Wesson revolvers, H&K, Sig, Walther and Browning pistols. Also interested in military pistols, revolvers, rifles and shotguns. Let me know what you have to trade. Email or PM for pics if interested.