The Guntec USA GUNTEC AR10 BUFFER TUBE offers a Mil-Spec buffer tube complete kit with a six-position design that provides versatile adjustment for AR-10 platforms, including an end plate, castle nut, 308 CAR short buffer, and spring, all crafted for .308 caliber performance in a rugged T6 aluminum construction that weighs 11 oz. This AR-10 compatible buffer tube features a matte AR10 size finish and is designed to integrate seamlessly with AR-10 components, delivering reliable recoil control and straightforward installation for rifles built to maximize modularity and precision. Made in the USA, the aluminum construction ensures durability while maintaining a lighter profile for steady handling in the field or at the range. With its 1.60 x 3.90 x 11.55 dimensions, the tube is tailored to fit AR-10 platforms and related configurations, supporting a secure, rock-solid fit when paired with compatible end hardware and springs. Ideal for builders seeking a dependable upgrade or replacement part, this buffer tube enhances cooldown, cycling consistency, and overall shooting experience in .308-caliber setups, delivering thoughtful design, consistent performance, and long-term reliability.