A pal of mine has been on the search for the 'perfect' .22 caliber 1911 practice/plinking pistol for about a year now. His first purchase was the Chiappa...then the GSG..now he wants either a Colt(Umarex..not original Ace) or a Kimber. He offered me my pick of the Chiappa or the GSG/ATI or both this morning. We went out and shot them both..and then went to lunch while I thought about it. I really wanted to buy his GSG...it is a substantialy superior looking piece of hardware compared to the Chiappa. However the grip safety wasn't working at all! That and it was the lesser in the reliability having several failure to feeds. The Chiappa on the otherhand looks like an 'airsoft' gun..has the key lock on the slide..just generaly looked inferior to some degree. The gripsafety being a non-issue with the Chiappa as it ain't got one(just looks like it has one). Cheesy plastic mags too The Chiappa was also by far the most reliable with no failures of any sort with two brands of bulk ammo. Accuracy was nip and tuck between the two..but I thought the Chiappa was maybe slightly more accurate. I wheedeled him down on price on the Chiappa 1911-22 and bought it. However I keep thinking(and reading) that the GSG/ATI 1911 .22 should be the superior gun despite the problems it exhibited. This got me to wondering if 1911 parts would interchange with with the GSG .22 pistol. Are the GSG 1911 .22 pistol's fire control parts interchangable with 1911 pieces?