Primary Weapons 4G2BTMB-1F Castle Nut 7075 T-6 Aluminum Black Anodized

The Primary Weapons Systems Enhanced Buffer Tube (EBT) is a rugged, feature-rich upgrade for AR-15 platforms. Machined from durable 7075 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.

Unlike traditional designs, the Enhanced Buffer Tube features an integrated ratcheting castle nut and endplate system—eliminating the need for staking and simplifying installation. This streamlined system reduces movement, ensures alignment, and provides a secure lock-up without compromising strength.

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.

Key Features:

• Material: 7075-T6 aluminum construction

• Finish: Black hardcoat anodized for corrosion resistance

• Tube Diameter: Mil-spec compatible

• Positions: 6-position stock adjustment

• Design: Fluted body for strength-to-weight optimization

• Ambidextrous QD Sling Mounts: Push-button points on both sides

• Integrated Ratcheting System: Castle nut and endplate included—no staking required

• Fitment: Compatible with standard AR-15 lower receivers

Optimized for Durability. Built for Mission-Driven ARs.
Upgrade your rifle with the PWS Enhanced Buffer Tube—precision-engineered for shooters who demand superior performance and rock-solid dependability. Available now at Battlehawk Armory.