The Air Arms S510 XS Tactical PCP Pellet Air Rifle is a fully regulated, precharged pneumatic rifle with 10 shot repeater. It has a sidelever with biathlon style drop down for easy operation and an ambidextrous tactical stock.FeaturesMagpul CTR adjustable buttstock with raised cheek piece and rubber buttpad 35 shots in .22, 25 shots in .25Max. energy: 32 FPE (.22), 44 FPE (.25)2-stage adjustable trigger with safetyPicatinny optics rail250 BAR / 3,626 PSI fill pressureRegulator Output Pressure: 150 BAR / 2175 PSIBuilt-in manometer5-position adjustable transfer portFully-shrouded Lothar Walther barrel with new Tactical moderatorM-LOK forearm slots on 3 sides11-slot forearm Picatinny accessory railMagpul (AR-compatible) removable textured gripMagpul M-LOK vertical foregripBarrel length: 19.5"Overall length (buttstock extended): 42.1", (buttstock retracted): 38.8"Weight: 6.75 LbsIncludes 2 rotary magazines and Air Arms Fill Connector