FAXON 18" 8.6MM/.338 BORE M24 PROFILE 1:3T BARREL BLANK
Faxon
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Faxon
FAXON 18" 8.6MM/.338 BORE M24 PROFILE 1:3T BARREL BLANK
Faxon Profiled Barrel Blank — 18" 8.6mm / .338 Bore M24 Profile (1:3 Twist) — Built for 8.6 Blackout
416-R stainless • Button rifled • Honed & lapped • Fully stress relieved • MPI inspected • M24 contour • 1:3 twist optimized for 8.6 BLK builders
The Faxon 18" 8.6mm / .338 Bore M24 Profile Barrel Blank is a purpose-driven starting point for 8.6 Blackout builders who want a proven precision contour paired with the cartridge’s defining feature: an extremely fast 1:3 twist. This blank is engineered to support the stabilization goals that make 8.6 BLK a standout for modern suppressed and hunting-focused builds.
Made from premium 416-R stainless steel, each blank is button rifled, honed and lapped, and fully stress relieved for uniform internal geometry and long-term dimensional stability. The M24 profile is a proven contour that balances rigidity and thermal stability, helping support consistent performance in hard-use, precision-oriented 8.6 Blackout configurations.
Important Intended-Use Notice (Read Before Chambering):
Due to the extremely fast 1:3 twist, Faxon advises against chambering this blank in any caliber other than 8.6 Blackout. This blank has been tested and optimized specifically for 8.6 BLK. For safety and best results, follow this guidance when planning your custom build.
Key Benefits for 8.6 Blackout Builders
- Dedicated 1:3 twist for 8.6 BLK: Optimized around 8.6 Blackout’s design intent and typical projectile use.
- M24 profile performance: Proven precision contour for rigidity and heat management.
- 416-R stainless steel: Consistent, machinable, and a proven choice for precision barrel work.
- Honed & lapped bore: Enhanced internal finish for consistency and easier maintenance.
- Fully stress relieved: Helps preserve geometry during machining and firing cycles.
- MPI inspected: Magnetic particle inspection for confidence in material integrity.
Builder Notes
- Ships unchambered & unthreaded: Your gunsmith selects final chamber, tenon dimensions, and muzzle threads.
- Suppressed setup planning: Confirm your suppressor/muzzle device system and thread requirements before final machining.
- Quality checks matter: Proper headspacing and concentricity verification are essential for custom builds.
Specifications
Note: Barrel blank ships unchambered and unthreaded. Final dimensions, chambering, contouring, threading, and finishing are the responsibility of the gunsmith or end user.
Frequently Asked Questions
Is this barrel blank chambered or threaded?
No. This blank ships unchambered and unthreaded. Your gunsmith will cut the chamber, tenon, and muzzle threads to match your action and intended build.
Is this blank intended for cartridges other than 8.6 Blackout?
Faxon advises against chambering this blank in any caliber other than 8.6 Blackout due to the extremely fast 1:3 twist. This blank has been tested and optimized specifically for 8.6 BLK.
Why choose an M24 profile for an 8.6 BLK build?
The M24 contour is a proven precision profile that offers stiffness and thermal stability, helping support consistent performance in suppressed and precision-oriented configurations.
What processes help ensure bore and material quality?
Each blank is button rifled, honed and lapped, fully stress relieved, and MPI inspected to support uniformity, stability, and confidence during machining.
Warranty: Backed by the Faxon Lifetime Guarantee. Full details: https://faxonfirearms.com/warranty-privacy-terms/
Backed by the Faxon Lifetime Guarantee. Full warranty details, exclusions, and terms:
https://faxonfirearms.com/warranty-privacy-terms/
- Rifling Twist Rate:
- 1:3
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