Just ordered me one of them there 7600 Carbines for $687.30 shipped. I purchased a Williams peep about three years ago so this plan has been in the works for a while. I also ordered hex head screw plugs for the forward receiver holes; got those from Brownells.
I have used both the Williams WGRS and the FP on 760/7600s. The FP is a better sight by far. Sturdier construction and allows click adjustment.
Just sayin'.