fizassist, yea I told them I wanted to take my #39 mount and cut it in front of the second hole then bolt the piece of rail under it, thru both remaining holes, to lower the rail so I could cowitness the A2 sights with my eotech. The handguards would need to be hogged out, but I think it would work(was willing to sacrifice the #39 and price of rail piece to try because the dual mount points on the Arms mount are much better than any single mount point for close to zero remount). They responded that all mounts where milled as one piece and no separate rail sections were available(was hoping they might have some scrapped mounts with good rails). Oh well either a good idea shot down or an expensive lesson averted. It might be doable with the piece that is cut off, but I was worried that it would be too short to securely position the sight far enough out. I might try anyway.