Primary Weapons Castle Nut 4G2BTMB-1F 7075-T6 Aluminum Black Anodized Buffer Tube

The Primary Weapons Systems Enhanced Buffer Tube (EBT) is a rugged, feature-rich upgrade for AR-15 platforms. Machined from 7075-T6 aluminum and finished with a hardcoat anodizing, this 6-position mil-spec tube is fluted for weight reduction and strength. Engineered for both functionality and endurance, the PWS EBT includes ambidextrous push-button QD sling attachment points, allowing versatile sling configuration for left- or right-handed shooters. Integrated ratcheting castle nut and endplate system eliminates staking and simplifies installation. Designed to meet the needs of high-performance rifle builds, the PWS EBT provides superior recoil control and long-term reliability in a compact, user-friendly package.