Brownells 6-Position Mil-Spec Buffer Tube, Black

The Brownells AR-15 mil-spec receiver 6-position extension tube is engineered for precision and versatility, making it an essential component for firearm enthusiasts and builders. With an exact 1.148 inches outside diameter, this extension tube ensures a seamless fit for adjustable mil-spec carbine stocks, allowing for a smooth transition from commercial carbine setups or fixed A2 style stocks to the adaptable M4 stock configuration. Ideal for custom builds, this extension tube features six meticulously machined notches on its underside, designed to securely engage the stock locking pin while providing effortless adjustability for optimal buttstock length. Crafted from robust yet lightweight 7075 aluminum, it undergoes a hardcoat anodizing process, resulting in a durable, wear-resistant matte black finish that withstands the rigors of use. Whether you're upgrading, converting or building from scratch, this extension tube offers the reliability and performance you need.