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Questions & Answers
why does the description say 4lbs when I got an answer that says 1.55? Expert Answer

The specifications are currently being updated. The correct weight for each barrel is 10.5" barrel - 1.20lbs, 12.5" barrel - 1.40lbs, 14.5" barrel - 1.55lbs, and the 16" barrel is 1.70lbs.

by Ethan, Gear Expert, August 22, 2022
Why is it Ultralight when there's another stainless steel Criterion that weighs 1.85lbs? They're the same length and contour. Expert Answer

The Criterion Barrels AR15 Barrels, Chrome-lined Ultralight Contour Barrels have the following weights. The 10.5" barrel is 1.20lbs, 12.5" barrel is 1.40lbs, 14.5" barrel is 1.55lbs, and the 16" barrel is 1.70lbs.

by Hunter, Gear Expert, August 9, 2022
Customer Reviews
Helpful Positive Review
Excellent Quality, blows away the competition by AR, Verified Owner, June 27, 2020
Second criterion barrel, this one was even better then the first. Gas port is perfectly sized and the rifling, crown and chamber are flawless and beautiful. Accuracy potential is better than any other chrome lined barrel from my observations. Not qui...
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10/11 found this helpful
Most Recent Reviews
Criterion Barrel by Grimey556, Verified Owner, December 2, 2025
It's a very accurate barrel and I do like it. But I'm a cheap guy when it comes to what I shoot at the range and these type of Barrels have very small gas ports with this one measuring in at .066. It absolutely hates steel case and low power 223 ammu...
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Most Recent Reviews
Best barrel out there by Ratrod79, Verified Owner, June 17, 2025
Goes without saying that this is probably the best barrel out there, precision, light weight it doesn’t get any better than this. Strongly recommend.
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Product Info for Criterion Barrels AR15 Barrels, Chrome-lined

The Criterion ultra light contour barrel is built for performance and reliability. This Chrome-lined AR15 barrel is designed to provide enhanced performance and handling characteristics while adding very little weight. The barrel extension and hand guard are manufactured from stainless steel, and the muzzle is chrome-lined. The barrels are machined with a hybrid profile, offering the best of both worlds by blending the outer contour for a great look and adding very little weight inside the barrel. It is their philosophy that the barrel is the most important part of the rifle, and should receive the same attention to detail that is given to every aspect of the design. Attention to detail is also extended to the small details that make Criterion AR15 barrels so special. The combination of skillful craftsmanship, attention to detail and the correct materials is what create a great shooting barrel. These Criterion AR15 barrels are built to exact specifications, with the highest quality materials. Criterion prides itself in the ability to provide a great performing product for their customers with each and every order.image

Specifications for Criterion Barrels AR15 Barrels, Chrome-lined:

Manufacturer: Criterion Barrels
Color: Black
Finish: Chrome-Lined
Fabric/Material: 4150 CrMoV
Caliber: 5.56x45mm NATO, .223 Wylde, .223 Remington
Barrel Profile: Hybrid
Gas Block Journal Size-Diameter: .750 in
Threads per Inch: 1/2x28
Barrel Twist Rate: 1-8
Gun Make: AR Platform
Gun Model: AR-15
Weight: 4 lb
Gun Type: Rifle
Country of Origin: USA

Features of Criterion Barrels AR15 Barrels, Chrome-lined

  • Chrome-lined internally for superior barrel life and corrosion resistance. Their chrome-lining process is the most refined in the industry and will not degrade accuracy.
  • .223 Wylde chamber that is designed to safely and effectively fire both .223 Remington and 5.56 NATO ammunition
  • Honed and hand-lapped rifling for bore uniformity and a pristine internal finish - aids in barrel cleaning and paramount for accuracy
  • Finely polished chambers for reliable extraction and feeding
  • Carbine gas system compatible with AR15 gas tube system
  • Gas hole tuned for proper function with and without suppressor
  • 0.750" Gas Block, dimpled for ease of installation and solid lock-up
  • 1/2x28 TPI muzzle threads compatible with a wide range of muzzle devices and suppressors
  • Precision-machined barrel extension with M4 feed ramp

Package Contents:

  • Criterion Barrels AR15 Barrels, Chrome-lined

Criterion Barrels AR15 Barrels, Chrome-lined Orderable Models

List of Orderable Models

  • Criterion Barrels AR-15 SBR Ultralight Barrel, Chrome-lined, 12.5in, 15120-UL6 , MPN: 15120-UL6 , Code: 2RR-ATB-100CL-15120-UL6
  • Criterion Barrels AR-15 SBR Ultralight Barrel, Mid-Length Gas, Chrome-lined, 14.5in, 15140-UL8 , MPN: 15140-UL8 , Code: 2RR-ATB-100CL-15140-UL8
  • Criterion Barrels AR-15 SBR Ultralight Barrel, Chrome-lined, 10.5in, 15100-UL6 , MPN: 15100-UL6 , Code: 2RR-ATB-100CL-15100-UL6
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