I have a complete 70 series Colt Commander 9mm slide and barrel. I would like to buy a RIA Commander (in .45 cal ) and replace the slide with my 9mm Commander assembly. What changes,if any, will have to be made to the RIA frame assembly besides fitting the slide to the frame?
Ejector, slide stop and magazine. The other issue will be the frame ramp. The feed ramp on .45 frames is different than that of 9mm 1911's.