[ORIGINAL TEX]

Can anyone tell me which standard 1911 parts are not compatible with the STI and SVI systems. I already figure that the magazines and trigger are not, but I was curious about grip safeties, thumb safeties, back straps, mag release buttons, etc.

Thanks,

Original Tex

 

[strider]

Hi Tex

Nonstandard parts of the modular frame:

Magazine
Magazine catch
Trigger
Plunger tube (integral to frame)
Mainspring housing
Mainspringhousing pin (longer)
Grip screws and bushings