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Out of stock
Proof Research .308 Win 20" PR10 Rifle Barrel - 101292
Out of stock

Proof Research .308 Win 20" PR10 Rifle Barrel - 101292

SKU 789274
Model Number 101292
UPC 843068101292
Customers must read Compliance Information before purchasing.
This product is fulfilled by a PSA Partner and shipping times may vary.

Product Details


  • Type: PR10
  • Size: 308 Winchester
  • Barrel Length: 20"
  • Twist Rate: 1:10"
  • Thread Size: 5/8-24
  • Material: Carbon Fiber
  • Color: Black
  • For Use With: AR Rifle
  • Weight: 2 lb 11 oz
  • Gas Journal Diameter: 7/8"
  • Gas System Length: Rifle


We have designed our AR barrels with the goal of improving performance and reliability in the AR platform. Our patented 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 cartridges such as the 22 Nosler and 6.5 Creedmoor, the bore pressure remains higher further down the barrel. By moving the port location, we ensure 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. Our AR-10 barrels use a deep feed system that makes the feed ramps compatible with the feed ramps in the lower receivers of both DPMS and Armalite style rifles. Our AR-10 barrels are head spaced to a JP high pressure bolt. We always recommend that the head space is verified before firing the rifle.


  • 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


Q & A


All NFA Rules Apply.
These items are controlled by the U.S. Government and authorized for export only to the country of ultimate destination for use by the ultimate consignee or end-user(s) herein identified. They may not be resold, transferred, or otherwise disposed of, to any other country or to any person other than the authorized ultimate consignee or end-user(s), either in their original form or after being incorporated into other items, without first obtaining approval from the U.S. government or as otherwise authorized by U.S. law and regulations.