Button Rifling OCTO Carbon Fiber Barrel Blank

Button Rifling OCTO Carbon Fiber Barrel Blank

$1,499.99
Built to Order – Typical Lead Time Up to 6 Weeks

Every Helix 6 Precision Button-Rifled OCTO Carbon Fiber Barrel Blank is built to order. The OCTO profile requires specialized manufacturing equipment, dedicated tooling, and extensive engineering to produce.

Lead times can vary based on demand and production schedules, and some orders may require additional time. Our goal is always to keep lead times as short as possible while taking the time to build a premium product that performs to the highest standards.

Barrel blanks are supplied as unfinished 26" blanks and are intended for chambering, threading, and fitting by qualified gunsmiths and machinists.

Questions? Contact us at info@helix6precision.com .

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Description

Helix OCTO – Octagonal Carbon Technology Optimized – Button Rifling Carbon Fiber Barrel Blank

The Helix OCTO Carbon Fiber Barrel Blank is built for custom rifle builders, precision shooters, and backcountry hunters seeking accuracy, consistency, and lightweight performance from a foundational barrel component.

Each blank features a match-grade 416R stainless steel core, precision button-rifled and hand-lapped for consistent bore dimensions and accuracy. The core is wrapped using Helix 6 Precision’s proprietary high-carbon, low-resin carbon fiber process, providing an optimized balance of stiffness, strength, thermal stability, and weight reduction.

The OCTO geometry is engineered directly into the blank using flat surfaces and reinforced corners to increase stiffness and reduce deflection compared to traditional round barrel profiles. The structure also allows for more intentional carbon fiber orientation, helping maintain stability as barrel temperatures change during sustained firing.

Each Helix 6 barrel carries a sub-½ MOA accuracy guarantee when used with match-grade ammunition, quality components, and by a capable shooter.

Key Features

  • Cut-to-Length Design – Sufficient material for 5/8-24 muzzle threading at any supported finished length.
  • Precision Button Rifling – Match-grade 416R stainless steel core is button-rifled and hand-lapped for exceptional consistency and accuracy.
  • OCTO Octagonal Geometry – Flat surfaces and reinforced corners increase stiffness and reduce deflection compared to traditional round barrel profiles.
  • High-Carbon, Low-Resin Construction – Provides an optimized balance of rigidity, strength, lightweight construction, and thermal stability.
  • Minimal POI Shift – Proprietary carbon fiber construction helps maintain point of impact during extended firing strings and changing barrel temperatures.
  • Sub-½ MOA Accuracy Guarantee – When used with match-grade ammunition, quality components, and by a capable shooter.
  • Precision Manufactured – Designed for custom chambering and finishing by qualified gunsmiths.
  • 26" Blank – Available as a 26" blank that can be cut to the desired finished length and chambered by a qualified gunsmith.

Specifications

Diameter Twist Approx. Weight
.224 1:8 3 lbs 5 oz
.243 1:8 3 lbs 4 oz
.257 1:7 3 lbs 4 oz
.264 1:8 3 lbs 4 oz
.277 1:8 3 lbs 3 oz
.284 1:8 3 lbs 3 oz
.308 1:8 3 lbs 1 oz
.308 1:10 3 lbs 1 oz

Weights are based on unfinished 26" blanks. Weights are approximate. As a general guideline, each additional 1" of barrel length adds approximately 1.5 oz of weight. Actual weight may vary slightly due to manufacturing tolerances, contour, and final machining.

Shank Diameter: 1.200"

Government Export Restriction

This item may be regulated for export by the U.S. Department of State or U.S. Department of Commerce. Please see our Export Policy prior to placing your order.

Government Restriction

By adding to cart, I understand and agree to the Domestic Restricted Product Policy and certify that I will comply with applicable federal, state and local laws and regulations.