took my two OG Vipers (2 or 3 yrs old, non-HD, 6.5-20X) off of my "longer distance" AR's (RRA 20" Varminter and DPMS LR308, both with Timneys). Traded them for a pretty decent price and was planning on putting HS-T's on them. Dealer offered me a smoking deal (I think) on two brand new 4-16 SFP PST's. I had read of some clarity issues with the early 4-16 PST's, but some reports say it has cleared up. The old Vipers were very unforgiving at full power, and the old BDC did not work for me. Any opinions on the 4-16 SFP PST w/EBR-1 MOA? Seems like a perfect AR scope to me. FWIW, paid about $400 total (tax and all) to upgrade BOTH scopes after trade. I think I did alright moneywise.