Air Arms S510 XS Tactical PCP Air Rifle Precharged pneumatic Sidelever with biathlon style drop down for easy operation Fully regulated 10-shot repeater Ambidextrous tactical stock Magpul CTR adjustable buttstock with raised cheek piece and rubber buttpad 40 shots in .177, 35 shots in .22, 25 shots in .25 Max. energy: 20 FPE (.177), 32 FPE (.22), 44 FPE (.25) 2-stage adjustable trigger with safety Picatinny optics rail 250 BAR / 3,626 PSI fill pressure Regulator Output Pressure: 150 BAR / 2175 PSI Built-in manometer 5-position adjustable transfer port Fully-shrouded Lothar Walther barrel with new Tactical moderator M-LOK forearm slots on 3 sides 11-slot forearm Picatinny accessory rail Magpul (AR-compatible) removable textured grip Magpul M-LOK vertical foregrip Barrel length: 19.5" Overall length (buttstock extended): 42.1", (buttstock retracted): 38.8" Weight: 6.75 Lbs Includes 2 rotary magazines and Air Arms Fill Connector **Please note: The moderator on the rifle can NOT be removed**