These have a 0.0645" gas port. The standard HDSI 12.5" barrel has a 0.0625" port which is optimized for suppressors and M855A1 ammo.
The large port barrels are better suited for a wide variety of ammo and non-suppressed use.
Hodge Defense 12.5" 5.56mm Carbine Barrel is the barrel used on the Hodge AU Mod 2 rifles. Incorporating FN’s proprietary steel (the same steel used in the M249 saw), these barrels were designed and made to Jim’s specifications.
- Proprietary midweight profile (close to Government profile)
- Military spec gas port optimized for use with 5.56 NATO spec ammo and suppressors
- .750" gas block journal
- Standard carbine gas system
- 1/2×28 threaded
- Chrome lined, phosphate coated
- 1lb 8.5oz in weight
- 1:7 twist
- M4 feed ramps
- Made in the USA
- 0.0645 Gas Port
Once this barrel is assembled into a complete firearm, it becomes a regulated item by the National Firearms Act (NFA). Check with your local and state laws for any further regulatory requirements. The buyer is responsible for compliance of all NFA rules and applicable laws.