Proof Research Barrett MRAD Pre-Fit Steel 7mm PRC Threaded Rifle Barrel 26in 1-8 Twist 5/8x24. Recently MRADs fitted with PROOF barrels chambered in 300 PRC were adopted by the United States Department of Defense. Barrels are easily replaced on this modular rifle system with no specialized tools or training required. Pre-fits will fit all current generation rifles without barrel screw cross slots in barrel extension. these MRAD barrels feature a straight taper contour with a 1.00in diameter muzzle and include the barrel extension pre installed and complete matching bolt head. Specifications for Proof Research Barrett MRAD Pre-Fit Steel 7mm PRC Threaded Rifle Barrel: Manufacturer: Proof Research Caliber: 7mm PRC Projectile Caliber: .284 Caliber Barrel Length: 26 in Barrel Material: Steel Barrel Twist Rate: 1-8 Firearms Threads Per Inch: 5/8x24 Gun Make: Barrett Gun Model: Barrett MRAD Weight: 3 lb Gun Type: Rifle Features of Proof Research Barrett MRAD Pre-Fit Steel 7mm PRC Threaded Rifle Barrel Long-Lasting - 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. Package Contents: Proof Research Barrett MRAD Pre-Fit Steel 7mm PRC Threaded Rifle Barrel What firearm models does the manufacturer say Proof Research Barrett MRAD Pre-Fit Steel 7mm PRC Threaded Rifle Barrel is compatible with? The manufacturer suggests that Proof Research Barrett MRAD Pre-Fit Steel 7mm PRC Threaded Rifle Barrel is compatible with Barrett MRADProof Research 134757: Barrett MRAD Pre-Fit Steel 7mm PRC Threaded Rifle Barrel 26in 1-8 Twist 5/8x24