New Remington Tactical Extended 12 ga. "Door Breacher" choke tube. Genuine Remington OEM part, not aftermarket. Matte finish, ported, serrated crown. New, but did not come in box. Performance tuned for Remington 12 ga. Models 870, 1100 and 11-87 shotguns with Rem-choke. Designed for optimum performance and recoil reduction and also aids in reducing muzzle rise. Does not fit Remington Models 1100 G3, Model 1100 Competition, Model 105 CTI, or Premier Over & Unders.