Norica Spyder GRS 0.22 Cal Air Rifle Velocity - up to 900 FPS (275M/S) in 22 cal. (5.5mm), 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