I’m going to mount an ATACR 4-16 42 F1 on an AR 15. I’m decided on a Spuhr mount. SP 4006 height 1.35 non cantilever. Or SP 4016 height 1.5 cantilever. I would prefer the 4006 to swap to a bolt gun but don’t think I can get the eye relief. Anyone running either of these on an ar? My ar is a Wilson combat with Magpul PRS stock so I will have LOP adjustment. I just didn’t want to have to mount partly on the forward portion of the rail since it is not a true one piece. Thanks guys.