Hex-2™ Buffer Tube (Hex-2)

Hex-2™ Buffer Tube (Hex-2)

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Product Description:

The Phase 5 Hex-2 is an AR type Buffer Tube that starts with a hexagonal shape and the rear most portion is round. This tube was specifically designed this way to utilize the SB Tactical Pistol Stabilizing Braces that can accept a 1.2" round buffer tube (Not compatible with adjustable type braces like the SBA3/SBA4/PDW). The Hex-2 is a heavy-duty USA certified 7075 T7 billet aluminum buffer tube with the versatility to use the 3.5" Phase 5 nitrile Foam Pad (included) or a SB Tactical Pistol Stabilizing brace (sold separately). Working closely with SB Tactical™, asking questions along the way, and updating the design based on the recommendations given by all, the Phase 5 Hex-2 Buffer Tube is a perfect component for any AR pistol build.


  • Hex-2 Buffer Tube
  • Castle Nut
  • End Plate
  • Foam Pad

Prop 65 Warning


Item Price: $49.95
Overall Length:
7.4 inches
Product Weight:
Assembled Weight:
Made in the U.S.A.

CNC-machined Hexagonal Pistol buffer tube made of 7075 T7 certified US billet aluminum.

Hex-2 CNC-machined Hexagonal aluminum Pistol buffer tube

Perfectly designed to fit the SB Tactical Stabilizing Braces that accept a 1.2" diameter round tube.