Proof Research PR15 .223 Wylde AR-15 Barrel - Carbine Length - Carbon Fiber- 11.5"

The Proof Research PR15 in .223 Wylde with an 11.5-inch barrel gives SBR and short-barrel pistol builders a genuinely lightweight, carbine-length-gas-system barrel without sacrificing Proof Research's accuracy standard.

Features:

• 11.5" barrel chambered in .223 Wylde, 1/7 twist rate
• aerospace-grade carbon fiber wrapped over a precision stainless steel liner for the complete barrel assembly
• Carbine Length gas system length, dimpled for a set-screw gas block for simple alignment
• Standard 0.750" gas block journal diameter for compatibility with most aftermarket gas blocks
• Cut rifled for genuine accuracy and a long service life
• Threaded muzzle for mounting a suppressor or muzzle device

Wrapping the barrel in carbon fiber over a thin steel liner trims real weight from the front of the rifle compared to an all-steel barrel of the same length and contour, while the carbon fiber jacket also helps dissipate heat during strings of fire.

The .223 Wylde chamber safely runs both .223 Remington and 5.56 NATO ammunition, giving owners genuine flexibility in ammunition selection without needing to track two separate chamberings.

Proof Research has manufactured carbon-fiber-wrapped barrels since 2010, and its PR15 and PR10 lines reflect that same barrel-making expertise applied to the AR-15 and AR-10 platforms specifically for builders and gunsmiths.