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Faxon set out to build the lightest possible large-frame barrel without turning it into a range-only novelty, and the Duty Series 16" pencil profile is the result. At right around 1.78 pounds, it strips serious weight off the front of an AR-10 build so the rifle points quicker and carries easier all day. The 1:10 twist stabilizes everything from lighter varmint loads to heavier hunting and match projectiles, and the chamber is cut to .308 Winchester SAAMI spec so you're not fighting for ammo options.
This one starts with 4150 CMV steel and gets a QPQ salt bath nitride treatment inside and out. That finish adds surface hardness, fights corrosion, and stretches barrel life, which matters on a slim contour that sees real use. The bore is button rifled, capped with an 11-degree target crown, and every barrel is fully stress relieved and air-gauge tested before it leaves the shop. Faxon machines these in-house at their family-owned facility in Greater Cincinnati, Ohio.
The mid-length gas system is a smart pairing for a 16-inch .308. It stretches out dwell time and softens the recoil impulse compared to a carbine-length setup, so the rifle cycles smoother and stays more controllable. The barrel uses a .750" gas block journal with a 1.1" journal length, so most common low-profile gas blocks drop right on. The muzzle is threaded 5/8×24, the standard for .30-caliber muzzle devices and .308-rated suppressors.
This barrel is cut for the LR-308 / DPMS pattern, which is the more common of the two AR-10 footprints. Before you order parts, confirm your receiver set, bolt, and gas components match up, since large-frame builds aren't as standardized as AR-15s. Match it with the right gas block and handguard and you've got the bones of a genuinely lightweight, hard-running .308 carbine.
This barrel uses the LR-308 / DPMS pattern extension, which is the more common of the two large-frame footprints. AR-10 builds aren't standardized the way AR-15s are, so confirm your receiver set, bolt, and gas components are all DPMS-pattern before ordering. When the parts match up, it drops right in like any other AR-10 barrel.
It runs a 1:10 twist, which is the sweet spot for .308 Winchester. That rate fully stabilizes the whole common range of .308 loads, from lighter varmint bullets up through heavier hunting and match projectiles. You won't be locked into one particular load to get good results.
Yes. The muzzle is threaded 5/8×24, the standard pattern for .30-caliber muzzle devices and suppressors rated for .308. Just verify your suppressor's caliber rating and check alignment when you install any device.
The pencil contour is all about weight savings, and at about 1.78 pounds this is one of the lightest .308 barrels out there. That trimmed front end makes the rifle point faster, transition quicker, and carry easier over a long day. Faxon tapers it to shed weight while keeping practical rigidity, so it's a great pick for anyone prioritizing handling in a large-frame build.
| UPC | 816341023277 |
|---|---|
| Manufacturer | |
| Manufacturer Part Number | 10A810M16NPQ |
| Barrel Length | 16" |
| Caliber/Gauge | .308 / 7.62 NATO |
| Color | Black |
| Length | 16" |
| Model | |
| Product Type | Barrel |
| Sights | No |
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