Hatsan Piledriver Big Bore PCP Air Rifle 

Available in .45 (.457) and .50 (.510) caliber 480cc Carbon Fiber Bottle 300 BAR (4,350 PSI) Fill Pressure Precision Rifled Barrel  Bullpup Design Quattro Trigger Long Sidelever for easy cocking action Synthetic Thumbhole stock with adjustable cheekpiece  Angle and elevation adjustable buttpad 11mm dovetail/weaver combo scope rail 3 Picatinny accessory rails mounted around the air cylinder Utilizes a fill probe threaded to 1/8" BSPP Large loading port accommodates ammo up to 34mm long 4-6 shots in .45 cal, 3-5 shots in .50 700 FPE in .45 cal, 800+ FPE in .50 Scope Kit Includes: Hawke Airmax 30 SF WA 4-16x50 AMX IR 10x Mil-Dot with 30mm Tube Hawke Two Piece 2" Offset High Rings, 30mm Dovetail

Helpful resources:

Tips for hunting with big bore airguns Tips for picking the right airgun for hunting game & pests Learn about hunting with air rifles Learn about air rifle hunting laws in your state