Ref. the scope fit on the B-Mag. you will need high mount rings for the bolt handle to clear the scope. The DIP bolt knob will be a good fix for that and probably make working the bolt a little easier, as the stock bolt is a little sluggish. with the magazine for the B-Mag I found that one had to be slow on chambering the next round or they catch and stove pipe. Of course now they come out with the HB in S/S, I* jumped on the B-Mag to fast and bought mine in Oct. 2013 and shows in Mfg. on 6/12/13. Purchased a Boyd Forest Camo Thumbhole for it but might just sell thye one I have and get the H/B and do some work on the Boyd stock so it will fit.