Stainless Steel

Proof Research 6 ARC AR Type Steel Barrel

ZEV Z19 Duty Stripped Slide w/ 509T Cut for Glock 19

Proof Research 6CM Impact Precision 737R Pre-Fit Carbon Fiber Barrel

Proof Research Blaser 308 28″ Steel Blank Barrel

Proof Research 6.5 PRC Savage Pre-Fit 24″ Steel Barrel

Proof Research 6 GT Zermatt Arms Origin Pre-Fit 26″ Steel Barrel

Proof Research 6 GT Terminus Zeus Pre-Fit 26″ Steel Barrel

Proof Research 6 GT Impact Precision Pre-Fit 26″ Steel Barrel

Proof Research 6 CM AR-10 22″ Steel Barrel

Proof Research 6.5 CM Zermatt Arms Pre-Fit 26″ Steel Barrel

Proof Research 6.5 CM Defiance Ruckus Pre-Fit Competition Contour 26″ Steel Barrel

Proof Research 6.5 CM Accuracy International Pre-Fit 24″ Steel Barrel for AX308/AT/AW/AE SA

Proof Research 6 GT Defiance Ruckus Pre-Fit 26″ Steel Barrel

Proof Research 308 Win Zermatt Arms Pre-Fit Steel Barrel

Proof Research 308 Win Terminus Pre-Fit Steel Barrel

Proof Research 223 Rem Zermatt Arms TL3/SR3 Short Pre-Fit 26″ Steel Barrel