Well I had some time on my hands the other day and did get the t/c peep sight mounted on my hawkens.I did have some trouble trying to find the best location on the rear tang,I did finally drill @ tap two new holes on the tang,and the best location was about a 1/2 back from the front screw on the tang.The instruction that came with the sight did state to use the rear wood screw and drill a extra hole for the front mounting screw on the peep,but what I found was the sight picture was hard tp pick up.I did move the the peep a little forward and the sight picture was easy: Now to see threw.I hope it works out o.k.a day at the range will tell me if this spot I pick is o.k.