TacFire A2 5.56 Complete Stock Kit is a full fixed-stock assembly optimized for 5.56 NATO / .223 Remington AR-15 lower receivers. Constructed from durable, impact-resistant black polymer, the system weighs 25.60 oz. The stock features a hinged butt plate providing direct access to an internal storage compartment. The kit includes a rifle-length receiver extension tube, A2 buffer, buffer spring, spacer, and mounting screw. Safety Note Follow all manufacturer installation instructions. Verify proper function and secure mounting before use. Comply with local firearm laws and regulations.