Hodge Defense 12.5″Large Port Pinned Barrel Assembly

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These barrels come with the gas block and barrel drilled and dimpled. The pin is not installed (so you can install the barrel nut) but the set screws and stainless steel coil pin are included.

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Hodge Barrel and Pinned Gas Block Combo

THESE BARRELS COME WITH A FCD GAS BLOCK AND BARREL DRILLED AND DIMPLED. THE PIN IS NOT INSTALLED (SO YOU CAN INSTALL THE BARREL NUT) BUT THE SET SCREWS AND STAINLESS STEEL COIL PIN ARE INCLUDED.

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 and optimized for the  M855A1 EPR ammunition, which is far more demanding on barrels.

M855A1 rounds operate at about 62,000 PSI (over 55k from M855) and are designed to perform to an expected standard of terminal performance and barrier penetration over a broader range of engagement distances, previous ammunition was criticized for being unstable and not providing consistent performance outside of a narrow optimal range.

The AU Mod 2 is optimized for running M855A1 EPR, and this Hodge barrel is at the heart of the system.

  • 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 8oz in weight
  • 1:7 twist
  • M4 feed ramps
  • Made in the USA
  • 0.0645″ Gas Port
GBF (Gas Block Forward Controls) is a 0.750 gas journal gas block done FCD way: meticulously designed and machined, with thoughtful features throughout.
Machined from heat treated 4140 bar stock, GBF is manganese phosphate coated, GBF holds rather tight tolerances to squeeze every bit of tight seal we can from the design.  GBF’s gas tube hole can be described as semi blind hole, in that it has an access port just big enough to allow a 3/32 punch to go through.  This feature was suggested by the late Semper Paratus Arms owner and operator, Will Larson, its purpose is to minimize the gas tube hole as much as possible, while providing a means for users to use a punch to dislodge an recalcitrant gas tube that’s been fixed in place by carbon.
Another useful feature is the bosses on both sides of the GBF to give gunsmiths an easy reference point to pin the GBF to the barrel.  Both 5/32×5/8, and 1/8×5/8 pins can be used to pin the GBF to the barrel.   Its set screws are 0.450 apart, which is compatible with one of the set screw spacing options on the popular SLR Rifleworks’s 750 dimpling jig.
GBF isn’t meant to be a light weight gas block, we prefer strength and dependability over any ever changing fad.  GBF’s sleek appearance is the result of  removing material that adds weight but doesn’t contribute to the strength and reliability.
A gas tube pin, two knurled set screws are included (3/32 wrench is required.)
Torque value for knurled set screws: 25inch·lb.
Weight: 1.58 oz.
Proudly designed and made in the USA.

NFA NOTICE:
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.

Additional information

Weight 18 oz
Dimensions 13 × 1 × 1 in

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