DUTY 5.56X45 NATO PENCIL PROFILE RIFLE BARRELS FOR AR-15 Reviews & Ratings

Manufactured in-house, these barrels are fully stress relieved, air-gauge tested, and 11 degree target crowned to ensure superior accuracy.

Quality is imbued into Faxon’s barrels from the start. Faxon start with the best materials, either certified 4150 Mil-Spec steel or 416-R Stainless. From there, each barrel goes through a battery of tests at each operation until finished in Nitride and final inspected. All barrels are individually checked for headspace by precision custom hardened gauges.

Faxon AR-15 5.56 Pencil barrels have a narrow O.D. both fore and aft of the gas block, for maximum weight saving. AR-15 5.56 Pencil barrels are manufactured at Faxon’s ISO-certified facility from one of the hardest materials on the planet, 4150 CMV carbon steel, featuring a QPC black Nitride or FDE coating for superior wear-resistance and longevity.

All Faxon AR-15 5.56 Pencil barrel feature M4 feedramps for to aid in reliable chambering and extraction of round, and they must pass magnetic particle inspection to ensure consistent quality.

SPECS

Barrel Material: 4150 CMV
Barrel Type: Button Rifled
Barrel Caliber: 5.56
Barrel Twist: 1:8
Barrel Length: 10.5"
Barrel Profile: Pencil
Barrel Gas System: Carbine or Mid-Length
Inside Finish: Nitride
Outside Finish: Nitride
Muzzle Thread: 1/2-28
Gas Block Diameter: .625"
Gas Block Journal Length: 1.1"
Barrel Extension: M4
Weight: 10.5” barrel 1.9 lbs / 14.5” barrel 1.15 lbs / 16” barrel 1.20 lbs
Magnetic Particle Inspected
11-degree Target Crown

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Reviews Summary

Reviewers are highly impressed with the DUTY 5.56X45 NATO Pencil Profile Rifle Barrel, praising its lightweight design, accuracy, and reliable performance. Many note its capability to deliver consistent groups even after extensive shooting, and appreciate its quality in both build and finish. Minor concerns include surface rusting on markings and gas port length, but overall satisfaction is evident.

What Reviewers Are Saying

Lightweight Design

80%

Customers consistently praise the barrel’s ultra-lightweight design, which enhances maneuverability and contributes to building lightweight AR rifles. Many users report an impressive performance without compromising accuracy, making it a favorite for minimalist builds.

Shooting Accuracy

70%

The barrel's accuracy receives frequent commendation, with numerous reviewers achieving small group sizes at various distances. Many highlight its ability to maintain accuracy even under heat, reinforcing its capabilities compared to heavier alternatives.

Quality and Finish

40%

Reviewers remark on the overall quality of the barrel, often noting a durable finish that withstands challenging weather conditions. However, some mention concerns over rusting on specific markings, suggesting vigilance in maintenance.

Installation Experience

65%

Many reviews reflect a positive experience with the installation process, indicating that the barrel fits well with existing components. Users appreciate the straightforward assembly and the lack of malfunctions after fine-tuning gas settings.

Gas Port Configuration

30%

A few reviewers express concerns regarding the mid-length gas port on a 14.5 inch barrel, which differs from a standard carbine length. Nonetheless, most find that it performs well with proper tuning, representing a non-issue for many.

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I bought this for a light weigh build. I put a 15" Midwest Industries rail with Daniel Defense fixed irons. I put a clamp on Daniel Defense low profile gas block as well. All in a shade under 6 pounds. Barrel was broken in with Black Hills 69 grain match BTHP. First 100 rounds after break in (50 round break) it shot 1.5 - 2" groups. Not bad but wanted a little more. After 300 rounds of all 69 match it shoots 3/4 all day long. I shoot 62 grain Gold Dot bonded now and it shoots flawless 3/4 inch groups. Shoots about everything in the 3/4 to 1.5 range. The barrel seems to do well with 62-77 grain. Mine was very well made with flawless finish. My only complaint as it has been noted was the 1-8 marking on the barrel was cut leaving bare metal. It does rust if you don't watch it. This is a patrol rifle that spends many days in the trunk of a squad. Hot in summer bitter cold in the winter. Barrel shoots the same at 90 degrees or 0 degrees. After 2 or 3 times of getting rust out with steel wool I covered the markings with fingernail polish. No problems since. Good barrel for a light weight gun at a good price. I have close to 3000 rounds through mine now and rifling still looks great. Many rounds left to go down the pipe