Proof Research AR-Style Barrel 308 Win 18" Rifle Length Gas System 1:10" Twist 5 Grooves, 5/8-24 tpi, Carbon Fiber Wrapped 100028

Virtually impervious to weather, nicks, dings or scratches, and up to 30% lighter and 300% stiffer than equivalent weight steel AR barrels, PROOF Research’s carbon fiber-wrapped barrels open up new possibilities in AR performance.

• These carbon fiber-wrapped barrels provide a high-end alternative to traditional barrels while still maintaining extreme accuracy, performance and durability.  
• Match-grade accuracy
• Improved heat dissipation for cooler and longer lasting barrels
• No point-of-impact shift during high-volume fire
• Reduced harmonic barrel vibration
• More about The Science behind there process here:  #ItsScience

NOTE: GAS BLOCK, GAS TUBE and BOLT NOT INCLUDED

308 Winchester barrel utilizes a .875” gas block and 300 AAC a .750” gas block