Barrel 5.56mm NATO 11.5" 1-7 Black

Name: Barrel 5.56mm NATO 11.5" 1-7 Black
Brand: Colt
Availability: InStock

Colt · Barrels

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Best price

$399.99at MidwayUSA

In stock Lowest in 30 dayschecked Nov 11, 2026

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Where to buy

Store	Price	Availability	Buy	Add to build
MidwayUSA Best price	$399.99checked Nov 11, 2026	In stock	Buy at MidwayUSA
Brownells	$337.99checked Nov 11, 2026	Out of stock	Buy at Brownells

Prices and availability change often, so confirm on the store's site before you buy. We may earn a commission from these links.

Price history

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Lowest in-stock price in the last 30 days: $399.99 at MidwayUSA. Dashed line = out of stock. Tracking since Sep 27, 2026.

Show the prices as a table

Store	Latest	Lowest	Highest
Brownells	$337.99	$337.99	$337.99
MidwayUSA	$399.99	$392.99	$399.99

Since Sep 27, 2026.

About this part

The Barrel 5.56mm NATO 11.5" 1-7 Black is an 11.5" 5.56 / .223 barrel from Colt. It's sold by 2 stores (1 in stock), from $337.99 to $399.99. The lowest in-stock price in the last 30 days was $399.99 at MidwayUSA.

Fits and works with

Caliber: 5.56 / .223 · Shop matching ammo
Bolt: Standard AR-15 (5.56 / 300 BLK / .350 Legend) · Bolt carrier groups
Barrel length: 11.5" · Handguards

Specifications

Manufacturer: Colt
Color: Black
Platform: AR-15
Caliber: 5.56 mm NATO
Barrel length: 11.5"

From the manufacturer

Genuine Colt Quality - Ready for Your Next AR-15 Pistol / SBR Build

This genuine Colt 11.5" Government Profile Barrel epitomizes modern warfare’s need for speed, light weight, and mobility - AND it’s ready to install on your next AR-15 pistol or SBR. Also known as the Commando Barrel, it’s forged from ordnance-grade carbon steel, with a chrome-lined bore and chamber, plus a traditional matte black Parkerized finish.

The Colt 11.5" Government Profile Barrel comes with the barrel extension, M4-type (round) front handguard cap, and front sight tower/gas block ALL installed. The gas port is drilled for a carbine-length gas tube - giving you an extra measure of reliability in a pistol build.

1-7" rifling twist
1/2"-28 tpi muzzle threads
Front sight tower/gas block has bayonet lug
Front sight post IS included
Carbine-length gas tube not included
OAL of entire assembly: 12-1/8"
All NFA rules apply

Built with compatibility in mind, Colt’s 11.5" Government Profile Barrel fits any standard "mil-spec" AR-15 / M16 / M4 upper receiver, and it’s chambered for 5.56x45mm NATO, so it will also safely fire civilian .223 Remington ammo as well.

Colt was the first supplier of AR-15 / M16 rifles to U.S. military. Nobody has more experience with the AR platform! Why build your next AR-15 with anything less a Colt barrel?