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Questions & Answers
Dimpled for gas block? Expert Answer

This TRYBE Defense 16 in Medium Profile AR Rifle Barrel is not dimpled.

by Hunter, Gear Expert, January 12, 2022
is all the 20 IN barrel shoot 5.56 NATO? one say it shoot 223. so I wanna make sure if it shoots 5.56 NATO

Yes, this barrel is chambered in 5.56 NATO.

by Alex, Verified Owner, August 18, 2025
Customer Reviews
Helpful Positive Review
AR-15 Barrel by Fixed stock, Verified Owner, August 3, 2024
TRYBE makes solid stuff; I needed a 20in for a long gun build 1x7 twist. Well made, nice price point and available 20 inch barrel
2/2 found this helpful
Helpful Negative Review
Moderately accurate item description by Nick, Verified Owner, December 20, 2023
Barrel measures roughly 16". However, it is NOT chrome lined like the description indicates, this item is only nitride coated. Additionally, the headspace and bore measurements are 0.225" which causes slight vapor/gas blow back. Gas port is off cente...
Read More...
4/4 found this helpful
Most Recent Reviews
Beautiful! by Steven B, Verified Owner, November 28, 2025
This barrel is exactly what I was expecting it to be. And it looks amazing! It was packed very nicely. It mounted into my new BCM M4 upper without any problems. The muzzle threads are clean and very nicely cut. The Nitride finish doesn’t have any imp...
Read More...
Most Recent Reviews
First, there is a dip on the edge of the shoulder where the mil-spec gas block meets the barrel. I'm not sure if that's supposed to be for some sort of oring, but if it is, two things-- one, it changes the distance (roughly by 1mm) which makes lining...
Read More...
Most Recent Reviews
Not dimpled for gas block set screws by bocaj, Verified Owner, January 15, 2024
Overall I'm happy with this purchase. There is no dimpling in the barrel for set screws if you want to use a low profile gas block. This makes gas block alignment a little more tedious. Still I think it's a good value option for a full length 20-in b...
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Most Recent Reviews
The listing is relatively inconsistent, it mentions both carbine and mid-length. Making it a gamble, if you're someone like me who grabbed this, and then a mid-length gas tube from another source; because you trusted the description, then you're kind...
Read More...
2/2 found this helpful
Read All 9 Reviews
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Product Info for TRYBE Defense Medium Profile AR-15 Barrel, 5.56x45mm NATO

Discover what your gun is capable of with TRYBE Defense Medium Profile AR-15 Rifle Barrels.image

Precision Engineered Performance. Tactical Maneuverability. Thermal Stability & Service Life.

Engineered for individuals who demand balance of accuracy, heat tolerance, and manageable weight from their rifle, the 5.56x45mm NATO Medium Profile Barrels from TRYBE Defense deliver the ideal combination of tactical maneuverability and thermal mass. Precision machined from 4150 CMV steel, heat-treated to MIL-SPEC hardness, and finished with a black nitride surface treatment, these barrels offer superior performance under sustained use and harsh environmental conditions. The medium profile balances weight and carry comfort with thermal performance, making it suitable for high-volume shooting without unnecessary and unwieldy mass.

A quality aftermarket barrel is the single most important upgrade you can make to increase the accuracy, consistency, and overall performance of your AR-15. The 5.56 barrel chambering safely accommodates both .223 and 5.56, but it is optimized for 5.56x45mm NATO ammunition.

All TRYBE Defense barrels undergo rigorous quality checks and are held to the highest of standards. Each batch of TRYBE Defense barrels is inspected nearly 70 times throughout the manufacturing process, to include 100% inspection of headspace to ensure compliance with SAAMI Specification. Each barrel is also air gauged after rifling and is held to .0002" concentricity of the bore.

The TRYBE Defense Medium Profile AR-15 Barrel chambered in 5.56x45mm NATO is a professional-grade component designed to elevate the performance of any rifle it’s paired with. Invest in quality where it counts. Whether for precision work, tactical applications, or high-volume shooting, this barrel delivers enhanced mechanical precision, gas efficiency, and structural resilience — with the metallurgy and engineering to back it up.

 

If you like what you see, click on the links below to view a wide variety of our best-in-class offerings from TRYBE DefenseTRYBE Optics, and TRYBE Tactical. TRYBE has hard-core offerings ready to augment your favorite firearm or next custom build that offer superb performance, keeping in mind your hard-earned dollar.

TRYBE Defense Gun Parts and AccessoriesGunsmithing EquipmentPersonal Protective EquipmentPistol PartsRifle Parts, and Triggers

TRYBE Optics BinocularsNight VisionRangefindersRed Dot SightsRiflescopes, and Weapon-Mounted Accessories

TRYBE Tactical ApparelEyewearGun CasesHearing ProtectionHolstersMagazine PouchesPlate Carriers, and Range Bags

Specifications for TRYBE Defense Medium Profile AR-15 Barrel, 5.56x45mm NATO:

Manufacturer: TRYBE Defense
Color: Black
Finish: Black Nitride
Fabric/Material: 41V50 Chrome Moly Vanadium Steel
Caliber: 5.56x45mm NATO
Barrel Profile: Medium
Gas Block Journal Size-Diameter: .750 in
Threads per Inch: 1/2x28
Barrel Material: 4150 Chrome Moly Vanadium
Flutes: No
Gun Make: AR Platform
Gun Model: AR-15
Condition: New
Gun Type: Rifle

Features of TRYBE Defense Medium Profile AR-15 Barrel, 5.56x45mm NATO:

  • Available Lengths: 16”, 20”
  • Compatible with .223 Remington and 5.56x45mm NATO Ammunition
  • 5.56x45mm NATO Chamber Includes Wider Freebore Geometry Compared to .223 Wylde, Accommodating Increased Case Expansion and Pressure, Plus Ability to Tolerate Poor Quality or Dirty Ammunition
  • Chamber Optimized for Military-Grade 5.56 Ammunition
  • Ideal for High-Volume Tactical Firearms
  • Medium Profile – Optimized Harmonics and Thermal Mass
  • Profile Retains Stiffness Near the Chamber for Reduced Barrel Whip and Zero Shift Under Rapid Fire
  • Constructed from 4150 CMV, Offering Higher Tensile and Yield Strength Compared to 4140 or Stainless Steel
  • Ready to Accept Your Favorite 1/2x28 Muzzle Device
  • M4 Feed Ramps for Reliable Cycling
  • Interior and Exterior Black Nitride Surface Treatment to Achieve 60+ HRC Surface Hardness
  • Barrel is Button-Rifled, Air-Gauged, and Headspaced to Match Grade Tolerances
  • Precision Machined in the USA

Package Contents:

  • TRYBE Defense Medium Profile AR-15 Barrel, 5.56x45mm NATO

TRYBE Defense Medium Profile AR-15 Barrel, 5.56x45mm NATO Orderable Models

List of Orderable Models

  • TRYBE Defense 5.56 NATO Medium Profile AR Rifle Barrel, Black, 16in, BARRIF16556 , MPN: BARRIF16556 , UPC: 810030586258 , Code: TRB-ATB-TRB701-BARRIF16556
  • TRYBE Defense 16 in Medium Profile AR-15 Rifle Barrel, .750 in Gas Block, Carbine Gas Tube, 5.56 NATO , MPN: BARRIF16556-KIT2 , Code: TRB-ATB-TRB701-BARRIF16556-KIT2
  • TRYBE Defense 20 in Medium Profile AR-15 Rifle Barrel, .750 in Gas Block, Rifle Gas Tube, .223 Wylde , MPN: TK1887-KIT1 , Code: TRB-ATB-TRB701-BARRIF20556-KIT1
  • TRYBE Defense Medium Profile AR-15 Rifle Barrel, .223 Wylde, 20 in, Black, BARRIF20223 , MPN: BARRIF20223 , UPC: 810089412478 , Code: TRB-ATB-TRB701-BARRIF20556

TRYBE Defense Medium Profile AR-15 Barrel, 5.56x45mm NATO Unavailable & Discontinued Models

List of Unorderable Models

  • USED, TRYBE Defense 5.56 NATO Medium Profile AR Rifle Barrel, Black, 16in, BARRIF16556 , MPN: BARRIF16556-EDEMO , Code: TRB-ATB-TRB701-BARRIF16556-EDEMO-RE-A
  • USED TRYBE Defense 5.56 NATO Medium Profile AR Rifle Barrel, Black, 16in, BARRIF16556, EDEMO2, Used, Condition Like New , MPN: BARRIF16556-EDEMO2 , Code: TRB-ATB-TRB701-BARRIF16556-EDEMO2
  • USED TRYBE Defense 5.56 NATO Medium Profile AR Rifle Barrel, Black, 16in, BARRIF16556, EDEMO3, Used, Condition Fair , MPN: BARRIF16556-EDEMO3 , Code: TRB-ATB-TRB701-BARRIF16556-EDEMO3
  • USED, TRYBE Defense 5.56 NATO Medium Profile AR Rifle Barrel, Black, 16in, BARRIF16556 , MPN: BARRIF16556-EDEMO , Code: TRB-ATB-TRB701-BARRIF16556-EDEMO-RE-C
  • USED, TRYBE Defense 5.56 NATO Medium Profile AR Rifle Barrel, Black, 16in, BARRIF16556 , MPN: BARRIF16556-EDEMO , Code: TRB-ATB-TRB701-BARRIF16556-EDEMO-US-C
  • USED TRYBE Defense 5.56 NATO Medium Profile AR Rifle Barrel, Black, 16in, BARRIF16556, EDEMO4, Used, Condition Fair, Scratches , MPN: BARRIF16556-EDEMO4 , Code: TRB-ATB-TRB701-BARRIF16556-EDEMO-SC-D
  • TRYBE Defense 16 in Medium Profile AR Rifle Barrel, 5.56 NATO and TRYBE Defense CIB Cowl Induction Muzzle Brake, .223/5.56, 1/2x28 , MPN: BARRIF16556-KIT1 , Code: TRB-ATB-TRB701-BARRIF16556-KIT1
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