OCTO Carbon Fiber Barrel Blank

OCTO Carbon Fiber Barrel Blank

$1,499.00
Built to Order – 6 Week Lead Time

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

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

Current Stock:
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Description
 

Helix OCTO – Octagonal Carbon Technology Optimized – Carbon Fiber Barrel Blank Overview

The Helix OCTO Barrel Blank is built for custom rifle builders, precision shooters, and backcountry hunters who demand uncompromising performance from a foundational component.

Each blank features a match grade 416R stainless steel core that is cut or button rifled and hand lead lapped for exceptional consistency. The core is then wrapped using Helix 6 Precision’s proprietary high carbon, low resin composite system to deliver a balance of strength, stiffness, and weight reduction.

The OCTO geometry is engineered into the blank itself, using flat surfaces and reinforced corners to increase stiffness and reduce deflection compared to traditional round barrel profiles. This structure also allows for more intentional carbon fiber orientation, improving stability under heat and sustained firing.

The result is a barrel blank system engineered to maintain a consistent point of impact as barrel temperatures change.

Key Features

  • Cut to length design with sufficient material for 5/8x24 muzzle threading at any supported length
  • Match grade 416R stainless steel core, cut or button rifled and hand lead lapped
  • OCTO octagonal geometry with flat surfaces and reinforced corners for increased stiffness
  • High carbon, low resin composite construction for thermal stability and rigidity
  • Designed for minimal point of impact shift during extended firing strings
  • Precision manufactured for custom chambering and finishing by qualified gunsmiths
  • Available as a 26-inch blank that can be cut to any finished length and chambering.

Specifications (Unfinished 27" Blank Weights)

Specifications (Unfinished 27" Blank Weights):

  • .224 – 3 lbs 5 oz - 1/8 Twist
  • .243 – 3 lbs 4 oz - 1/8 Twist
  • .257 – 3 lbs 4 oz - 1/7 Twist
  • .264 – 3 lbs 4 oz - 1/8 Twist
  • .277 – 3 lbs 3 oz - 1/8 Twist
  • .284 – 3 lbs 3 oz - 1/8 Twist
  • .308 – 3 lbs 1 oz - 1/8 Twist
  • .308 – 3 lbs 1 oz - 1/10 Twist
     

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.