Can I use the frame I ordered from Rainer, the 80% "Glock" Lower, given I use all the appropriate parts in the slide, can I build a 10mm or .357 sig on that frame, and if so, are there any technical difficulties, special lower parts, a lot of machining, etc. Thanks ahead for your help. If possible, I'd like to use a 19/23 length slide if available and possible, in 10mm or .357Sig.

FT