I have converted several 1911's to different calibers. In general it requires the proper slide, barrel, ejector and magazine. I have done full size frames (Colt, Auto Ordance, and Springfield) from 45 to 9mm, 38 Super, 10mm, and 41AE (the 41AE is based upon a 9mm rim size and is a rebated rim case). In most instances the feed ramp on the frame worked well. In one instance it reqiured some work to feed reliably. In the case of the 41AE, 10mm mags from a Colt Delta Elite in 10mm worked very well. I have not attempted the conversions on a commander sized frame but would think that the process is similar. I have also installed a Kimber 22LR conversion on an Essex frame that worked well also. Good luck.
NRA Life Member
"Democracy is two wolves and one lamb voting what to have for lunch. Liberty is a well armed lamb contesting the vote" Ben Franklin
"The constitutions of most of our States assert that all power is inherent in the people; that... it is their right and duty to be at all times armed." --Thomas Jefferson to John Cartwright, 1824. ME 16:45
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