Proof Research 223 Rem Stiller Pre-Fit Steel Barrel

The Proof Research 223 Rem Stiller Pre-Fit Carbon Fiber Barrel were designed for Stiller Predator/TAC actions. The Stiller barrels are available in several barrel lengths, twist rates, and contours. They are up to 64% lighter than traditional steel barrels, and are made to endure extreme temperatures. The barrels are simple to install and require few specialized tools. They come chambered and threaded for an easy install – torque on, ensure headspace with proper gauges and head to the range.

Proof Research 223 Rem Stiller Pre-Fit Steel Barrel


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.

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Part Number Barrel Length Twist Rate Muzzle Thread Contour Weight
129050 26” 7 5/8-24 Competition 7lbs-5oz



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Additional information

Weight N/A
Barrel Length

26" 129050


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