Colt Defender slide

Is Colt Defender slide drop on to Officers model frame, or do rails and recoil channel need to be cut back and if so how much? Please only respond if you know.
TIA, J
IF IT WAS SAFE, I WOULDN'T BE ASKING...

answered own question. nevermind...

Answer is yes, if anyone else is wondering; also works on Cmdr frame as in Defender+.