The LBE Round Handguard End Cap fits .750″ Diameter Barrels. The handguard end cap installs behind your FSB (front sight base). Original style handguards and many aftermarket style handguards require a round or triangular end cap. LBE Unlimited is a leading producer of US Made gun parts and accessories.
LBE Unlimited Handguard Cap, Round, Fits .750 Barrels, Black ARHCR