PSA is a good vendor. The rifle will be a heavy gun capable of MOA accuracy out to 800 yards or more. You need to buy a QUALITY rear sight. DD, LaRue, Colt, YHM. Don't expect anything from it if you spend less than $100 on the rear sight, or $500 on an optic system. I recommend the Trijicon TR24 with LaRue one-piece Mount.