CMC 81626 AR-15 6-Position Carbine Buffer Tube Kit

AR-15 Buffer Tube Assembly Built to Mil-Spec Standards

This complete buffer tube kit provides everything needed to finish your AR-15 lower receiver with a proper, mil-spec compliant stock assembly. It's a straightforward solution for builders who demand quality components and reliable performance.

What's Included

• 6-Position Buffer Tube: Machined from 7075-T6 aluminum to mil-spec dimensions
• Carbine Buffer: Standard 3-ounce weight for typical carbine-length systems
• Recoil Spring: High-tensile steel carbine action spring
• Castle Nut & Locking Ring: Machined high-carbon steel, heat-treated
• Quick-Detach End Plate: For easy sling attachment

Superior Finish & Durability

The buffer tube features a Type III, Class II hard-coat anodized finish in black that resists corrosion and wear. Through-drainage holes allow water evacuation in wet environments—a practical feature for serious shooters. All steel components receive a nitride finish for enhanced durability and corrosion resistance.

Built to Last

Every component is manufactured to mil-spec tolerances using ASTM-certified domestic materials. The heat-treated castle nut and end plate ensure reliable, secure assembly. This kit is made in the USA and designed to work seamlessly with standard mil-spec AR-15 stocks.

Whether you're completing your first build or upgrading an existing rifle, this buffer tube kit delivers the quality and reliability you expect from a precision firearm component.