Valken Norica Spider GRS Air Rifle .177 Cal Velocity - up to 1083 FPS (330M/S) in 177 cal. (4.5mm), ambidextrous Anti-shock synthetic Stock w/checkering on the grip and fore grip Grs (gas ram System), ventilated rubber butt pad, fine adjustment rear sight with fiber optic Metal Hooded front sight with fiber optic, 11mm dovetail mount with scope Stop