Replacement SBPDW buffer tube for the SB Tactical® SBPDW Brace. OEM tube that comes with SB Tactical’s SBPDW Brace for AR-15. This proprietary buffer tube and integrated castle nut are one-piece and made form 6061 aluminum. Compatible with mil-spec bolt carrier groups and carbine buffers/springs (not included).

Install Tip – Castle nut wrenches are often steel. The SBPDW buffer tube/castle nut assembly is aluminum. Care must be taken during installation and removal to avoid damaging the integrated castle nut. The HBPDW Replacement Wrench can be used with this buffer tube.

Full installation instructions available through SB Tactical.