I saw one just the other day in my safe. Uses Sig 226 magazines, quad rail, buffer tube cover, upgraded front sight. Pretty sweet gun. Runs like a top.
(No, that was not helpful. Gonna sell it after I get my next 9mm SBR, though. Probably 2013.)
(No, that was not helpful. Gonna sell it after I get my next 9mm SBR, though. Probably 2013.)