Pro Hunter XT Flextech Buttstock with Energy Burners Original Endeavor Buttstock in Special Realtree Hardwoods "AP" Camo Finish This is the Pro Hunter XT/Endeavor Flextech stock with Energy Burners„¢ and special All Purpose AP Camo pattern. Fits Thompson Center Arms Encore, Pro Hunter, and Endeavor muzzle loading rifles. The Energy Burners are the shock absorbing arc shaped ribs on the sides of the butt that combine with a Sims recoil pad to reduce recoil up to 50%. If you already own a Pro Hunter Flextech„¢ stock, you can upgrade by purchasing Energy Burners separately and install them in your existing Pro Hunter stock. This Endeavor stock features a special "Realtree Hardwoods AP Camo" pattern that's different than the standard TC Realtree Hardwoods camo pattern. The matching forend is 207-7592 (see below). To see the rest of our Thompson Center products, please Click Here.