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The heart of any AR is the barrel, and Faxon put a lot into this one. The Duty Series 7.5" Govt/SOCOM barrel is cut for compact 5.56 builds where maneuverability matters, running a pistol-length gas system and a proven government/SOCOM profile that keeps extra material where the heat and stress pile up. Faxon machines these in-house in Cincinnati from certified 4150 CMV steel, button rifles them with a 1:8 twist, and finishes them in black nitride inside and out for real corrosion and wear resistance.
The 7.5" length is right at home in an AR pistol, a truck gun, or a tight CQB-style setup where you want the whole package short and quick to swing. The SOCOM contour adds rigidity and helps the barrel handle heat better than a skinny pencil profile, so it stays honest during faster strings of fire. The 1:8 twist is the sweet spot for 5.56, stabilizing everything from lighter 55-grain plinking loads up through heavier 77-grain match and defensive rounds.
Faxon doesn't cut corners on quality control. Every barrel is fully stress relieved, air-gauge tested, magnetic particle inspected, and individually headspace-checked with hardened gauges before it ships. The muzzle wears an 11-degree target crown for consistent gas release, and the .750" gas block journal plays nice with just about any standard set-screw or clamp-on block. Standard 1/2×28 threads mean you can top it with your choice of brake, comp, or suppressor mount.
Folks who've run Faxon barrels tend to come back for more, and this one earns that reputation with tight groups and dependable cycling in a short gas system. If you're putting together a compact 5.56 build and want a barrel that punches well above its size, this is a straightforward pick that gets the job done.
It runs a pistol-length gas system, which is the right setup for a 7.5" barrel. Faxon tunes it for reliable cycling in short configurations, and you'll want to pair it with an appropriate buffer and spring for the smoothest function. The .750" gas block journal accepts standard set-screw or clamp-on blocks.
Yes. The 1:8 twist is a versatile middle ground that stabilizes common 55 to 77 grain 5.56 and .223 projectiles. That covers everything from budget range ammo to heavier match and defensive loads, so you're not locked into one bullet weight.
No, the barrel ships on its own. You'll need to supply your own .750" gas block and a pistol-length gas tube to complete the build. That's standard for a bare barrel and gives you the freedom to pick the components you prefer.
It's a natural fit for AR pistols, compact truck guns, and short CQB-style setups where a short, maneuverable package is the goal. The SOCOM profile adds rigidity and heat resistance, so it holds up well during faster strings of fire. The 1/2×28 muzzle threads let you add a brake, comp, or suppressor mount.
| UPC | 816341020023 |
|---|---|
| Manufacturer | |
| Manufacturer Part Number | 15A58P7NSQ |
| Caliber/Gauge | .223 REM/5.56 NATO |
| Length | 7.5'' |
| Sights | No |
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