Talked to these guys at SHOT. I definitely liked the balance, even with the big ol' bull barrel; and I really like the lack of a FPB, would make it super easy for your choice of RDS. The head 'smith there said the uppers would go onto your TS or 75 frame, but you might want to watch out for the tolerances. Of course, if your slide/frame fit is too tight, look into how you fit a 1911 slide and frame. Overall super cool/10