I got this a couple years back from a buddy for a good price, and have been searching since for a non-80-series 1911 to host it on (my other 1911s have the 80 series guts).
It was flawless from the first shot with the colt magazine and bulk federal ammo (also liked the remington subsonic). It choked badly on Fiocchi Match 320 but I can't afford to shoot that stuff anyway.
Put another 300 rounds through the 1911 conversion unit last night... haven't cleaned it. No malfunctions. I fickin' love this thing. The heavy blued steel slide makes you feel like you're shooting a "real" pistol. Only waaaaaaaaaaaaaaaay cheaper.