Faxon 16 inch 5.56 SOCOM profile barrel with factory pinned .750 gas block

FAXON PINNED GAS BLOCK SOCOM PROFILE 16" MID-LENGTH 5.56 NATO AR15 BARREL

Faxon
SKU:
15A58M16NSQ-APGB
|
UPC:
816341025448
Availability:
Usually ships within 2 business days when available.
$226.00
(1 review)
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Description

Faxon Pinned Gas Block — 16" SOCOM Profile 5.56 NATO AR-15 Barrel (Mid-Length Gas)

Duty-tough SOCOM contour with a factory pre-pinned .750" gas block for rock-solid reliability.

The Faxon 16" 5.56 SOCOM Barrel with Pinned Gas Block removes the most tedious step of an upper build. We pre-notch the journal, pre-drill the included low-profile gas block, and supply the retaining pin—so your gas system stays locked in place under hard use.

Built from 4150 CMV steel, button-rifled with a 1:8 twist, and finished in black nitride inside & out, this SOCOM profile offers excellent heat control and longevity. Every barrel is stress relieved, air-gauge tested, MPI-inspected, and headspace verified in-house for dependable accuracy.

Key Benefits

  • Factory-pinned .750" gas block: Precision aligned and drilled for a secure, maintenance-free mount.
  • SOCOM profile strength: Extra material where it counts for sustained fire and thermal stability.
  • Mid-length gas system: Smooth recoil impulse and reliable cycling across common 5.56 loads.
  • Durable nitride finish: Corrosion and wear resistance for long service life.
  • Rigorous QC: Stress relieved, air-gauge tested, MPI-inspected, and headspace checked by Faxon Firearms.

Specifications

Caliber
5.56 NATO
Length
16"
Profile
SOCOM
Gas System
Mid-Length
Material
4150 CMV Steel
Rifling
Button-Rifled, 1:8 Twist
Finish
Salt Bath Nitride (inside & out)
Muzzle Thread
1/2x28 TPI
Gas Block Diameter
.750" (factory pre-pinned)
Gas Block Journal Length
1.9"
Barrel Extension
M4
Weight
1.65 lb (approx.)
Crown
11° Target Crown

Included: Barrel, low-profile gas block (hand-tightened for shipping), and retaining pin.

Frequently Asked Questions

Is the gas block already pinned?
Yes. The journal is notched and the block is pre-drilled and aligned; pin and block are included (hand-tightened for transit).
Why choose a SOCOM profile?
SOCOM adds material where heat and stress are highest, improving point-of-impact stability during rapid strings of fire.
What muzzle devices fit?
Standard 1/2x28 devices and suppressor adapters for 5.56 / .223.

Overview: 16" Pinned Gas Block SOCOM 5.56 Barrel

The Faxon Pinned Gas Block 16" SOCOM 5.56 Barrel is built for shooters who demand a secure gas system and duty-grade durability. The factory-pinned .750" gas block locks your setup in place, while the mid-length gas system softens recoil and promotes reliability. Each barrel is stress relieved, air-gauge tested, magnetic particle inspected, and headspace verified to deliver dependable accuracy shot after shot.

Warranty Faxon Lifetime Guarantee. Covers manufacturing and material defects to the original purchaser. Excludes damage from misuse, neglect, non-standard ammunition, or modifications. Register your product at faxonfirearms.com/product-registration to expedite service. For purchases through dealers or distributors, warranty repairs are handled directly by Faxon Firearms; refunds must be processed through the selling entity. Full policy: faxonfirearms.com/warranty-privacy-terms/