Looking at all 1911's with integrated rail on dust cover.
So far here's my list
Sig Sauer Gsr 1911 w/ rail .45
Sig Sauer Tac Ops .45
Sig Sauer 1911 nitron rail .45
Sig Sauer 1911 stainless rail .45
Springfield Arms operator .45
STI duty One 9mm, .40, .45
Para 14-45 anniversary .45
Para Ltc...