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Questions & Answers
How much does the 20" barrel weigh

The 20" weighs in at 2lbs 1oz.

by RyanT, Verified Owner, November 12, 2025

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Product Info for Proof Research Carbon AR .223 Wylde Threaded Rifle Barrel

PROOF Research has designed the AR barrels with the goal of improving performance and reliability in the AR platform. The Caliber Matched Gas System (CAMGAS) results in a gas system that is tuned specifically for the cartridge and length of the barrel. The AR-15 Platform was originally designed around the 223REM and 5.56NATO cartridges and the AR-10 was designed around the 308 Win/7.62NATO round. With higher performance cartridge such as the 6.5 Creedmoor, the bore pressure remains higher further down the barrel.image

By moving the port location, Proof Research ensures that the gas system pressure is the same as what the AR platforms were originally designed around. The result is a recoil impulse that is noticeably softer, less fouling in the receiver, increased reliability of extraction, and less wear and tear on brass. This helps keep you on target and shooting while taking advantage of the latest high performance cartridges.

Specifications for Proof Research Carbon AR .223 Wylde Threaded Rifle Barrel:

Manufacturer: Proof Research
Color: Carbon
Caliber: .223 Wylde
Gas Block Journal Size-Diameter: .750 in
Barrel Material: Steel
Flutes: No
Gun Make: AR Platform
Gun Model: AR-15
Weight: 2 lb
Gas Block Journal Size-Length: 1 in
Gun Type: Rifle
Firearms Threads Per Inch: 5/8x24
Application: Shooting

Features of Proof Research Carbon AR .223 Wylde Threaded Rifle Barrel

  • Lightweight - Up to 64% lighter than traditional steel barrels of similar contour
  • Extreme Temperature Resistance - Improved heat dissipation for cooler and longer lasting barrels
  • Unprecedented Durability - Wrapped with high-strength, aerospace-grade carbon fiber impregnated with a proprietary matrix resin
  • Long-Lasting - Excellent erosion wear characteristics and corrosion resistance
  • Extreme Pressure Resistance - An optimum combination of high tensile strength along with requisite toughness to withstand extreme chamber pressures encountered during firing

Package Contents:

  • Proof Research Carbon AR .223 Wylde Threaded Rifle Barrel

Proof Research Carbon AR .223 Wylde Threaded Rifle Barrel Orderable Models

List of Orderable Models

  • Proof Research Carbon AR .223 Wylde Threaded Rifle Barrel, 16 inch, Intermediate, 1-8 Twist, 5/8-24, Carbon, 143261 , MPN: 143261 , UPC: 843068143261 , Code: 2SB-ATB-PR04RB-143261
  • Proof Research Carbon AR .223 Wylde Threaded Rifle Barrel, 18 inch, Rifle Length, 1-8 Twist, 5/8-24, Carbon, 143285 , MPN: 143285 , UPC: 843068143285 , Code: 2SB-ATB-PR04RB-143285
  • Proof Research Carbon AR .223 Wylde Threaded Rifle Barrel, 16 inch, Mid Length, 1-8 Twist, 5/8-24, Carbon, 143254 , MPN: 143254 , UPC: 843068143254 , Code: 2SB-ATB-PR04RB-143254
  • Proof Research Carbon AR .223 Wylde Threaded Rifle Barrel, 14.5 inch, Mid Length, 1-7 Twist, 5/8-24, Carbon, 143223 , MPN: 143223 , UPC: 843068143223 , Code: 2SB-ATB-PR04RB-143223
  • Proof Research Carbon AR .223 Wylde Threaded Rifle Barrel, 14.5 inch, Mid Length, 1-8 Twist, 5/8-24, Carbon, 143230 , MPN: 143230 , UPC: 843068143230 , Code: 2SB-ATB-PR04RB-143230
  • Proof Research Carbon AR .223 Wylde Threaded Rifle Barrel, 16 inch, Mid Length, 1-7 Twist, 5/8-24, Carbon, 143247 , MPN: 143247 , UPC: 843068143247 , Code: 2SB-ATB-PR04RB-143247
  • Proof Research Carbon AR .223 Wylde Threaded Rifle Barrel, 20 inch, Rifle Length, 1-8 Twist, 5/8-24, Carbon, 143308 , MPN: 143308 , UPC: 843068143308 , Code: 2SB-ATB-PR04RB-143308
  • Proof Research Carbon AR .223 Wylde Threaded Rifle Barrel, 11.5 inch, Carbine Length, 1-7 Twist, 5/8-24, Carbon, 143216 , MPN: 143216 , UPC: 843068143216 , Code: 2SB-ATB-PR04RB-143216
  • Proof Research Carbon AR .223 Wylde Threaded Rifle Barrel, 18 inch, Rifle Length, 1-7 Twist, 5/8-24, Carbon, 143278 , MPN: 143278 , UPC: 843068143278 , Code: 2SB-ATB-PR04RB-143278
  • Proof Research Carbon AR .223 Wylde Threaded Rifle Barrel, 20 inch, Rifle Length, 1-7 Twist, 5/8-24, Carbon, 143292 , MPN: 143292 , UPC: 843068143292 , Code: 2SB-ATB-PR04RB-143292
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