Well it turns out that I wasted $6.47 having my M3 clone shipped, since Primary Arms is apparently 3 miles from my house. Oh well. I agree with the other posts, the M3 clone is solid and appears well made, particularly for the amount spent. Anyway, I first mounted the scope on my BCM upper. I'm so sick of looking at that thing without the lower, but here's a pic anyway. BCM midlength with Daniel Defense Omega 9 rail. Magpul rail covers and a Primary Arms M3 clone with high cant mount. Next I mounted it on my DPMS AP4 .308. Pretty cool, but I think I may go with a Millet 1-4x DMS-1, since the .308 will be for further shots. Still, it looks pretty mean on there, and if my dang lower doesn't show up one day soon here, I will take it to the range for a spin.