TacFire MAR110 A2 Mil-Spec Buffer Tube Kit AR-15 Black Aluminum

The TacFire MAR110 A2 Mil-Spec Buffer Tube Kit delivers reliable cycling performance for AR-15 platforms chambered in 223 Rem and 5.56x45mm NATO. This complete kit includes all components needed to upgrade or replace existing buffer systems with mil-spec compatibility. Black anodized aluminum construction ensures corrosion resistance and maintains proper headspace under rapid fire conditions.

What Makes This Different

Unlike commercial-spec alternatives, this mil-spec buffer tube maintains the standard 1.146-inch outer diameter that ensures compatibility with military-pattern stocks and accessories. The A2 configuration includes the traditional rifle-length buffer system that provides consistent bolt carrier velocity and reduces felt recoil compared to carbine systems. Precision machining maintains tight tolerances for reliable feeding and extraction across various ammunition weights.

Key Features

• Complete mil-spec buffer tube kit with A2 rifle-length system
• Black anodized 6061-T6 aluminum construction resists wear and corrosion
• Standard 1.146-inch outer diameter fits mil-spec stocks and accessories
• Includes buffer tube, rifle buffer, action spring, and castle nut
• Compatible with 223 Remington and 5.56x45mm NATO chamberings
• Proper buffer weight optimized for standard 20-inch barrel configurations
• Threading matches standard AR-15 lower receiver specifications

Field testing demonstrates consistent cycling with ammunition ranging from 55-grain to 77-grain projectiles. The rifle-length buffer system reduces bolt carrier velocity by approximately 15% compared to carbine systems, extending component life and improving accuracy potential. Law enforcement agencies report reliable function through temperature extremes from -20°F to 140°F. The system maintains zero shift during rapid strings of fire in competitive shooting applications.

Technical Specs

• Material: 6061-T6 aluminum with Type III anodizing
• Buffer tube length: 10.75 inches overall
• Outer diameter: 1.146 inches (mil-spec)
• Thread pitch: 1.17x18 TPI
• Buffer weight: 5.2 ounces (rifle configuration)
• Action spring: Chrome silicon steel, rifle length
• Compatibility: AR-15 platform rifles in 223/5.56
• Finish: Matte black anodized

This kit provides the foundation for building or upgrading AR-15 rifles with proven mil-spec reliability. Professional armorers recognize the importance of proper buffer system matching to barrel length and gas system configuration. Quality components at this price point make it an intelligent choice for builders seeking dependable performance without premium pricing.