Proof Research AR-Style Barrel

Proof Research AR-10 Barrel 308 Winchester 18" Heavy Contour 1:10" Twist

Proof Research AR-15 Barrel 6mm ARC 18" Heavy Contour 1:7.5" Twist Stainless

Proof Research AR-15 Barrel 6mm ARC 18" Medium Contour 1:7.5" Twist Carbon Fiber

Proof Research PR15 Barrel 6mm ARC 20" 1:7.5" Twist Carbon Fiber

Proof Research AR-10 Barrel 308 Winchester 16" Heavy Contour 1:10" Twist

Proof Research AR-Type Barrel 11.50" for AR-Style, Stainless - 100387

Proof Research Carbon Fiber Barrel 308 Win 16 Inch AR Compatible 10 Twist