Phase 5 Hex-2 Pistol Buffer Tube
The Phase 5 Hex-2 Pistol Buffer Tube

When designing its all new Hex-2 Pistol Buffer Tube, Phase 5 listened to important advice firearms instructors, law enforcement professionals and AR Pistol enthusiasts to develop what the manufacturer calls the “perfect component for any AR pistol build.”

Phase 5 worked closely with Sig Sauer on the Hex-2 Pistol Buffer Tube, which was specifically designed to utilize the Sig Sauer SB15 Pistol Stabilizing Brace.

Measuring just less than 7.5 inches and weighing  just more than 6 ounces, the Hex-2 is a heavy duty, USA certified 7075 T7 billet aluminum pistol buffer tube with the versatility to use the Phase 5 nitrile Foam Pad (included) or the SB15 Pistol Stabilizing brace (sold separately).

In its most basic package, the Hex-2 includes a castle nut, end plate, foam pad and the new Phase 5 SB15 Accessory Plug (SB15-AP).

The added billet aluminum Accessory Plug creates a great storage solution inside the Sig Sauer SB15 Pistol Stabilizing Brace. The Phase 5 SB15-AP allows you to store batteries, small extra parts, cleaning supplies and many other much needed items.

The Hex-2 Pistol Buffer Tube retails for $59.95.

For more information on the Hex-2 Pistol Buffer Tube and other products from Phase 5, please visit

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