Upgrade your AR-15 build with the reliable Guntec AR-15 Mil-Spec Buffer Tube Set, a complete receiver extension kit engineered for consistent performance in carbine and pistol configurations. This essential assembly provides the foundation for smooth recoil management and dependable operation across popular calibers. Key Features Mil-Spec dimensions ensure broad compatibility with standard AR-15 stocks and braces, including SBA Tactical models Six-position T6 aluminum buffer tube delivers lightweight strength and precise fitment for adjustable stock positioning Complete kit includes end plate, castle nut, 3 oz CAR buffer, and upgraded chrome silicon spring for reliable cycling Multiple color and finish options (Black, Blue, Bronze, FDE, Red, Gold) allow custom aesthetic matching without compromising function Quality steel and aluminum construction built for durability in demanding tactical and range environments Benefits for AR-15 Builders Whether replacing worn components or assembling a new rifle, this set solves common pain points like inconsistent buffer function or missing hardware. The chrome silicon spring offers improved resistance to heat and fatigue compared to standard options, promoting longer service life and smoother operation. The Mil-Spec design fits seamlessly into most AR-15 platforms chambered in .223 Rem, 5.56x45mm, and .300 Blackout. Specifications Buffer tube: Mil-Spec, six positions, T6 aluminum Buffer weight: 3 oz CAR style Spring: Upgraded chrome silicon Kit weight: Approximately 9.6 oz Finish options: Anodized or specialized coatings in listed colors Compatibility: AR-15 carbine and pistol builds Why Choose the Guntec AR-15 Mil-Spec Buffer Tube Set Guntec USA has manufactured tactical accessories since 1989, focusing on economical yet robust components that meet rigorous standards. This kit provides everything needed for a professional-grade receiver extension in one package, saving time on sourcing individual parts while ensuring Mil-Spec tolerances for optimal performance. Invest in dependable recoil management and build quality-add the Guntec AR-15 Mil-Spec Buffer Tube Set to your next project today.