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New! CMC Triggers AR-15 Ultra Compact 5.56 Nato Threaded AR Barrel w/Gas Block/Gas Tube CMC-BBL-556-085P-GB Color: Black, Finish: Nitride, Fabric/Material: Steel, $10.00 Off w/ Free Shipping

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Color:
Black
Finish:
Nitride
Caliber:
5.56x45mm NATO
Barrel Length:
8.5 in
Barrel Profile:
SOCOM
Gas System Length:
Pistol Length
Gas Block Journal Size-Diameter:
.750 in
Barrel Twist Rate:
1-7
Barrel Material:
4150 Chrome Moly Vanadium
Flutes:
No
Gun Make:
AR Platform
Gun Model:
AR-15
Gas Block Journal Size-Length:
1.13 in
Gun Type:
Pistol
Firearms Threads Per Inch:
1/2x28

Code: 1TA-ATB-C3CTB11-CMC-BBL-556-085P-GB

MPN: CMC-BBL-556-085P-GB

UPC: 810169561805

List: $119.99Save $10.00
$109.99

Product Info for CMC Triggers AR-15 Ultra Compact 5.56 Nato Threaded AR Barrel w/Gas Block/Gas Tube

Building a short, easy-to-handle AR pistol? This 8.5-inch barrel is about as compact as 5.56 NATO gets. It runs a pistol-length gas system and a 1:7 twist, so it stabilizes heavier bullets well. The government profile follows the same pattern shooters have trusted for years. A black nitride finish protects the bore and the outside from rust and wear. Muzzle threads are 1/2x28 TPI, so most common flash hiders and brakes thread right on. Here's the part that saves you time: the gas block and gas tube come in the box. No hunting for parts.image

Specifications for CMC Triggers AR-15 Ultra Compact 5.56 Nato Threaded AR Barrel w/Gas Block/Gas Tube:

Manufacturer: CMC Triggers
Color: Black
Finish: Nitride
Fabric/Material: Steel
Caliber: 5.56x45mm NATO
Barrel Length: 8.5 in
Barrel Profile: SOCOM
Gas System Length: Pistol Length
Gas Block Journal Size-Diameter: .750 in
Barrel Twist Rate: 1-7
Barrel Material: 4150 Chrome Moly Vanadium
Flutes: No
Gun Make: AR Platform
Gun Model: AR-15
Gas Block Journal Size-Length: 1.13 in
Gun Type: Pistol
Firearms Threads Per Inch: 1/2x28

Package Contents:

  • CMC Triggers AR-15 Ultra Compact 5.56 Nato Threaded AR Barrel w/Gas Block/Gas Tube
  • Includes gas block and gas tube

What firearm models does the manufacturer say CMC Triggers AR-15 Ultra Compact 5.56 Nato Threaded AR Barrel w/Gas Block/Gas Tube is compatible with?

The manufacturer says that CMC Triggers AR-15 Ultra Compact 5.56 Nato Threaded AR Barrel w/Gas Block/Gas Tube is compatible with AR-15

CMC Triggers AR-15 Ultra Compact 5.56 Nato Threaded AR Barrel w/Gas Block/Gas Tube Orderable Models

List of Orderable Models

  • CMC Triggers AR-15 Ultra Compact 5.56 Nato Threaded AR Barrel w/Gas Block/Gas Tube, 8.5in, M4 Barrel, 1-7 Twist, Pistol Length, 1/2x28 TPI, Nitride, Non Fluted, Black, Medium, CMC-BBL-556-085P-GB , MPN: CMC-BBL-556-085P-GB , UPC: 810169561805 , Code: 1TA-ATB-C3CTB11-CMC-BBL-556-085P-GB
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Last updated 2026-10-06 UTC.