Guntec AR-15 Mil-Spec Buffer Tube Set

Enhance the reliability and customization of your AR-15 with the Guntec AR-15 Mil-Spec Buffer Tube Set. This complete receiver extension kit delivers precise Mil-Spec dimensions for seamless compatibility with a wide range of carbine stocks and braces, ensuring smooth operation across .223 Rem, 5.56x45mm, and .300 Blackout platforms.

Key Features

• Six-position T6 aluminum buffer tube – Lightweight yet durable construction for adjustable stock positioning and reduced overall firearm weight without compromising strength.
• Complete assembly components – Includes end plate, castle nut, 3 oz CAR buffer, and upgraded chrome silicon spring for reliable cycling and consistent return-to-battery timing.
• Mil-Spec design – Standard 1.15-inch diameter ensures compatibility with Mil-Spec stocks and SBA Tactical braces for versatile builds.
• Multiple color and finish options – Available in anodized or Cerakote finishes including Black, Blue, Bronze, FDE, Gold, and Red to match your aesthetic preferences.

Benefits for Your Build

This set addresses common pain points like lost or worn components by providing a ready-to-install solution that restores or upgrades your AR-15’s recoil management. The upgraded spring offers improved durability and performance over standard options, while the precise threading simplifies installation for both new builds and replacements.

Specifications

• Buffer tube material: T6 aluminum
• Buffer weight: 3 oz CAR style
• Spring: Chrome silicon (upgraded)
• Positions: Six adjustable
• Compatibility: AR-15 carbine and pistol configurations
• Finish options: Anodized or Cerakote in multiple colors

Why Choose the Guntec Buffer Tube Set

Manufactured by Guntec USA with a focus on quality and value, this kit provides everything needed for a professional-grade buffer system. Its robust materials resist wear during range use or field conditions, making it an ideal choice for builders seeking dependable, American-made components.