Since the M27-2 had the same type cylinder the no-dash had (recessed), there should be no issue. Once installed, make sure the front doesn't scrub the forcing cone, and the timing is correct (ratchets worn/not worn) Also look at the extractor rod for right or left hand thread. (Dash 2 should be left-hand).One of my Model 27 no dash revolvers has a post 1982 cylinder. Are there any issues with installing a cylinder from a 27-2 that I should be aware of? I have a line on a complete 27-2 cylinder assembly with crane.