Air Venturi Ascent PCP Air Rifle Pre-charged pneumatic (PCP) air rifle with built-in underlever pump Interchangeable calibers: .177, .22, .25 (caliber change kits sold separately) Sidelever cocking Pump rifle 3-5 times after each shot to maintain velocity (number of pumps depends on caliber) Synthetic stock Fully-shrouded rifled steel barrel Two-stage adjustable trigger Cylinder size: 170cc Max. fill pressure: 3625 PSI/250 BAR Max. velocity: 1150 FPS (.177, 10.5gr pellet), 1100 FPS (.22, 13.43gr pellet), 950 FPS (.25, 25.4gr pellet) Max. energy: 27 FPE (.177), 38 FPE (.22), 50 FPE (.25) Max. shots per fill: 20 (.177), 24 (.22), 24 (.25) Pump handle lock Adjustable hammer spring Ridged texturing on grip and forearm Combination 11mm dovetail and Weaver optics rail Manual safety Ridged rubber buttpad Barrel length: 23" Overall length: 43" Weight: 8.45 lbs. Includes 2 magazines, male QD fill probe, hex wrench, 2 sets of O-rings, and 4x32 Scope with mounts Combo Includes: .22 Caliber Ascent air rifle, .25 Caliber Change Kit with pellet probe and one .25 cal magazine