Hatsan Repex PCP Air Rifle Semi-auto side bolt action Precharged pneumatic Precision rifled and choked shrouded German steel barrel Steel upper receiver, synthetic lower receiver 1/2 UNF threaded muzzle Detachable 165cc air cylinder fills to 3,625 PSI/250 BAR Shots at optimal velocity*: 70 (.22 and .25) Magazine capacity: 12 rounds (.22), 10 rounds (.25) Integrated pressure gauge Max. velocity (lead): 875 FPS (.22), 775 FPS (.25) Max. energy: 25 FPE (.22), 36 FPE (.25) Textured pistol grip with onboard magazine storage Adjustable hooded red fiber optic front sight Adjustable and removable green fiber optic rear sight Combination 11mm dovetail/Weaver optics rail Manual push button safety Extended Foster quick-disconnect fill fitting Includes two S/Roto Index magazines Telescoping stock with additional folding stock included Barrel length: 19" Overall length: 31.5"-33.9" Overall weight: 5 lbs. (gun only) * - within 85% of peak velocity.