ejc204
11-24-10, 01:55
I'm currently in a middle of a spr build. I'm slowly piecing everything together. I got the barrel coming next week and now I just need to get rails and the upper. The parts that I already have are the following: complete lower with a Magpul UBR Stock, MIAD Grip, B.A.D. Lever, and Geissele DMR trigger. Upper: PRI gas buster charging handle, complete bolt carrier/bolt, 18" 1:8 barrel with rifle lenght gas system, PRI Flip up front sight gas block, and a OPS Inc flash supressor. I want to use a Larue Tactical scope mount with either a Vortex Viper PST 1-4x2mm optic or the Leupold Mark 4 MR/T 1.5-5x20mm M2 knobs IR SPR Scope. A few questions I had about the scope mount was that both of these scopes require just about 4in of eye relief and I am a NTCH shooter so, I was leaning towards the extended Larue mount. I was looking at a few possible upper and rail systems. But, I wanted to hear people's input and what you would suggest for my build. I was interested in either the Vltor Vis 3ak, Mega Monolithic Upper, or either Rainier Arms billet upper/Mega Billet Upper with Superior Weapon Systems rifle lenght rail system. Does anyone have experience with any of these items and what would you suggest. Thanks.