JP Enterprises is known for making absolute top of the line AR-15 and AR-15 parts and accessories. Their parts are favorites with 3-gun competitors, hunters, target shooters and military professionals. The JP Bolts and Bolt Carriers are hands down the best in the industry made in full mass and low mass varieties. Their JP Tactical Compensators, also known as the Benny Cooley Comp, are the standard by which others are measured and the JP Recoil Eliminator is in a class by itself. The new JP Silent Captured Spring System is hugely popular as a smooth, quiet buffer system and their low mass operating system (LMOS) is a 3-gun favorite. See our full JP Enterprises parts line up below including the JPTRE compensators, Low Mass Bolt Carriers, Full Mass Bolt Carriers, Complete LMOS and FMOS AR-15 BCG, JP Enhanced bolt, Enhanced AR-15 bolt gas rings, adjustable gas blocks, Silent Captured Spring for AR-15, AR-10 and 9mm and replacement Silent Captured Spring Packs.