Air Arms S510 XS Ultimate Sporter Xtra Air Rifle, FAC, Black Soft Touch Precharged pneumatic Smooth sidelever cocking mechanism 10-shot repeater 2-stage adjustable trigger with safety 11mm scope grooves (no open sights) 250 Bar / 3,626 PSI Fill Pressure Built-in manometer (air pressure gauge) Built-in adjustable power Fully shrouded Lothar Walther barrel Ambidextrous Black Soft-Touch Stock Adjustable cheekpiece Checkered pistol grip and forearm Adjustable rubber buttpad Rear sling swivel stud Fully-Regulated 288cc cylinder Regulator Output Pressure: 150 BAR / 2175 PSI 60 shots in .177, 55 shots in .22, 40 shots in .25 Accessory rail under forearm with built-in adjustable sling mount Includes 2 rotary magazines, 4 hex wrenches, and fill adapter