I just recd my 380 today, its exactly the same dimensionally as my 1911-22 browning, with some noticeable changes, 380 has cheapo plastic grips, not like the nice wood ones on the 22 (I changed them, they fit), better sights on 380 than the 22, extended controls on 380, composite frame on 380, mags fit in either, but slides don't interchange, 22 slide fits on 380 and racks but 380 slide wont fit on 22 frame . Steel slide on 380, alloy on 22, arched mainspring housing on 22, flat on 380, beavertail on 380, none on 22, 380 is snappy to shoot