Summer Cleanout Sale!
Huge Savings On 2000+ Items From 200+ Brands - SHOP NOW

Summer Cleanout Sale!
Huge Savings On 2000+ Items From 200+ Brands - SHOP NOW

Daily Deal: ATN Thor-LTV 3-9x 256x192 12 Micron Thermal Scope $1095.00 $679.99- Get Yours! 

Barrel 5.56mm NATO 11.5" 1-7 Black
Barrel 5.56mm NATO 11.5" 1-7 Black
Barrel 5.56mm NATO 11.5" 1-7 Black
Barrel 5.56mm NATO 11.5" 1-7 Black
Barrel 5.56mm NATO 11.5" 1-7 Black
Barrel 5.56mm NATO 11.5" 1-7 Black
Barrel 5.56mm NATO 11.5" 1-7 Black
Barrel 5.56mm NATO 11.5" 1-7 Black
Barrel 5.56mm NATO 11.5" 1-7 Black
Barrel 5.56mm NATO 11.5" 1-7 Black
Barrel 5.56mm NATO 11.5" 1-7 Black
Barrel 5.56mm NATO 11.5" 1-7 Black
None
MadeInUsa MadeInUsa OFF

COLT - Barrel 5.56mm NATO 11.5" 1-7 Black

6 Reviews
Barrel 5.56mm NATO 11.5" 1-7 Black
Brownells #
160000444
MFR #
SP401757
UPC
098289600271
$337.99
Coupon Code
Purchase Limit Help

Out of Stock

NOTIFY ME WHEN IT'S BACK IN STOCK
Can we ship this to you? (US only)
{{restriction.odmShipCheckMessage}}

How To Buy Guns Online

International purchase information

Specifications
Gas Block Diameter:
0.750 Inches
Barrel Contour:
Government
Cartridge:
5.56x45 NATO
Muzzle Threads:
1/2"x28
Barrel Length:
11.50
Twist:
1-7
Gas System Length:
Carbine
Make Model Fit:
AR-15.Universal
Color:
Black
Item Length (Inches):
11.500
Restriction
Threaded Barrel Restriction:
Yes
View US State Restrictions
Can we ship this to you? (US only)
{{restriction.odmShipCheckMessage}}

How To Buy Guns Online

International purchase information

What is the COLT - Barrel 5.56mm NATO 11.5" 1-7 Black?

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

See all of our AR15s and AR15 parts here.

Threaded Barrel Restriction: 
Threaded Barrels have restricted shipping to CA.

Please select a FFL Dealer
or
7 dealers near
Distance:
10miles
arrow-down
Sort by:
Nearest first
arrow-down
pin wrong
No dealers found

Please search by another zipcode to find the nearest dealer.

Close
Brownells Retail Store
Phone Call
Pin in
Clock
You must select required check box

Note:

Listed hours & fees are not guaranteed and subject to change. Please contact the dealer to confirm current hours & fees.
* Must accept required fields.
  • Pin in Brownells Featured Dealers

    Choosing a Brownells Featured Dealer is the fastest and easiest way to complete your purchase. Brownells Featured Dealers have agreed to perform FFL transfers on guns purchased online from Brownells. We have their necessary FFL information on file and your FFL order will ship directly to them once processed.

  • Pin in Standard Dealers

    Standard Dealers have not yet agreed to perform FFL transfers on guns purchased online from Brownells. If you choose a Standard Dealer, you are responsible for contacting that dealer and arranging for the dealer to submit a signed copy of an FFL and to give Brownells permission to ship the gun.

  • Pin in Not Available Dealers

    Not Available Dealers are dealers Brownells cannot ship guns to at this time. These dealers either do not meet our requirements for FFL transfers, or prefer to not perform transfers for guns purchased online from Brownells.

Switch view map
7 dealers near

Alternative products

Left Badge
Right Badge OFF  
5 Stars

200

300

Add on

Left Badge
Right Badge OFF  
5 Stars

200

300

AR-15 BARREL 5.56MM NATO GOVERNMENT REVIEWS

4.2
6 Reviews
5 Stars
67%
4 Stars
17%
3 Stars
0%
2 Stars
0%
1 Stars
17%
Reviews Summary
The AR-15 Barrel 5.56mm NATO Government receives mixed reviews with highlights on its accuracy and quality. However, issues with the barrel nut and feed ramps lead to significant concerns. While customer service is praised for responsiveness, some users report unfortunate manufacturing flaws, especially regarding machining and assembly.
What Reviewers Are Saying
Product Quality
65%
Reviews often mention the high quality and accuracy of the barrel, with some users praising its performance and tight tolerances, which contribute to excellent shooting results. This quality aligns with Colt's reputation in the industry.
Manufacturing Issues
60%
Several reviewers express concerns about manufacturing defects such as improperly machined feed ramps and poorly designed barrel nuts. These quality control issues have led to dissatisfaction among users who had to replace components, highlighting a gap in the production process.
Customer Service
50%
The customer service experience is notably positive, with users reporting quick and helpful responses to issues, including warranty claims and replacements. This support has helped alleviate frustrations caused by product defects.
Value for Money
40%
Some customers comment on the priceiness of the barrel, but many believe the accuracy and overall performance justify the cost, asserting that it offers good value for the quality of the product.
Shipping and Packaging
35%
While shipping is generally described as fast and packaging adequate, some users noted that initial delivery experiences varied, indicating room for consistency improvement in this area.
5
Great, heavy barrel
Pricey but this barrel has great accuracy and takes a long time to heat up. I measured the gas port on my barrel and it is definitely .070 or less. More like .068. Perfect FBI barrel aside from the fsp.
by Aaron on July 31, 2021
Was this review helpful? 1
5
Colt 11.5 heavy barrel w. 203 flats
Classic Colt quality in a not so common contour. just received this today and after close inspection and verifying headspace, indexed installation was a snap. torqued to 60 ft lbs. after a few wet/dry patches to clean bore, function fired 5 rounds at 25 yds with M4 Aimpoint using 77gr IMI MK 262 rounds, 3 were inside 1/2 inch, all five were inside one inch with clean extraction and 3 o'clock ejection. it doesn't get any better!
by Orion on January 12, 2021
Was this review helpful? 1
5
COLT 11.5
What is there to say about Colt hbar 11.5! Probably one of the most accurate barrels ever! I cut down FSB and turned this into FBI HRT with correct Geissele rail. It is a dream handling her! Sub moa with quality ammo and me doing my part! Quality barrel at very fair price. Fast shipping , packed fairly well
by MWF on December 22, 2020
Was this review helpful? 1
5
Makes a really nice pistol
During assembly i noticed the front sight had no gas port drilled in it. I contacted Brownells and the next morning i had a replacement in hand. I cant compliment the customer service enough. As for the barrel, everything is nicely machined and this 11.5 runs very well.
by JT on October 21, 2020
Was this review helpful? 2
4
Good barrel but!!!!!
Great barrel actually colt product however the included barrel nut is trash two teeth deformed with just hand torque 30lbs and was a bit over sized definitely not mil spec i ened up having to replace it for build but barrel itself is good so buyer beware replace barrel nut on builds
Would you recommend this? Yes, I would recommend to a friend
by Jesse on July 26, 2024
Verified Purchase
Was this review helpful? 0
View All 6 Reviews
Customer Questions
0 Questions