TacFire MAR049B Mil-Spec Buffer Tube Kit AR-15 Pistol Black

The TacFire MAR049B Buffer Tube Kit delivers mil-spec reliability for AR-15 pistol builds at a fraction of OEM costs. This complete assembly includes everything needed to properly cycle your pistol platform while maintaining the precise tolerances required for consistent function.

What Makes This Different

Unlike basic commercial buffer tubes, this mil-spec design features the correct 1.148" diameter threading and proper staking grooves that ensure your castle nut stays locked under heavy use. The 7075-T6 aluminum construction provides 40% greater strength than standard 6061 alternatives. Each kit undergoes dimensional verification to guarantee proper headspace and timing with mil-spec bolt carrier groups.

Key Features

• Complete mil-spec buffer tube assembly with castle nut and end plate
• 7075-T6 aluminum construction with Type III hard coat anodizing
• Proper 1.148" x 20 TPI threading for authentic mil-spec compatibility
• Six-position length adjustment with positive lock detents
• Integrated QD sling mount point on end plate
• Pre-installed buffer retainer and spring for immediate installation
• Black finish matches standard AR-15 components

This buffer system maintains consistent bolt velocity across various ammunition weights and powder charges. The precise internal dimensions ensure proper buffer travel distance, preventing short-stroking issues common with out-of-spec tubes. Competition shooters rely on this consistency for rapid follow-up shots, while tactical applications benefit from the enhanced durability under adverse conditions.

Technical Specs

• Material: 7075-T6 aluminum with hard coat anodizing
• Threading: 1.148" x 20 TPI mil-spec standard
• Overall length: 7.25 inches extended, 4.75 inches collapsed
• Weight: 8.2 ounces complete assembly
• Compatibility: All mil-spec AR-15 lower receivers
• Finish: Matte black Type III hard coat
• Includes: Buffer tube, castle nut, end plate, buffer, spring, retainer

This kit eliminates compatibility guesswork while providing the exact specifications required for reliable AR-15 pistol operation. The mil-spec dimensions ensure compatibility with any quality upper receiver and bolt carrier group combination.