Maddmax
US Veteran
Yes, slide and barrel from full size M&P 45 goes right on the M&P 45C frame. The frames are same length, only difference is the short grip. Function was perfect. Put the M&P 45C back to stock and sold it to finance another project. Should have done photos, but this is an easily repeated swap by anyone with the two pistols.
I have the FS45 and liked the hand grip. The mid size felt better than the 45c. C was just a little too short gripped for me. Nice idea though.