The Kinetic Research Group Overmolded Cheekpiece is grippy and has a little give for long days behind the rifle. It retains the comfortable shape of the enhanced cheekpiece (which replaced the older narrow cheekpieces on the gen 4 Whiskey-3 starting in Feb 2014 and comes on all X-ray chassis). It has a right hand shooter bias but is usable for off-side shooting, or it can be flipped around to give left hand shooter bias. Fits: Whiskey-3, X-Ray, & 180 series chassis Note: Actions with very long bolt throws may require some extra clearance in some positions