The Hatsan PileDriver Air Rifle is a genuine bullpup design, manual loading, side-lever action, pre-charged pneumatic (PCP) air rifle.Advanced Polymer, Tactical Design with Integrated Pistol GripUnique gas piston hammer spring designPrecision rifled barrel designed exclusively for heavy slugsLocking elevation adjustable cheek restElevation & fit angle adjustable soft rubberized butt padLong combination optics rail accepts both 11 mm and Picatinny scope mounts300 BAR fill pressure