Air Arms S510 XS Carbine PCP Rifle Precharged pneumatic Regulated Sidelever cocking 10-shot repeater 2-stage adjustable trigger 5-position Transfer Port Power Adjuster 11mm scope grooves (no open sights) 3625 psi fill pressure (250 bar) Built-in manometer (air pressure gauge) 186cc air tank Lothar Walther barrel Shrouded barrel for extra-quiet shooting Ambidextrous Monte Carlo poplar stock Dual raised cheekpieces Checkered pistol grip and forearm Superbly blued Ventilated rubber buttpad