WBP AK74 BARREL

Polish AK74 Barrel WBP WBP Polish AK47 barrel 5.45x39mm 23 mm barrel trunnion journal 16.3 inches long Button rifled 4 grooves Military Spec 1:7.87 (1:8) twist rate 4140 European Certified steel Nitrided treated interior coating Nitride treated Phosphated exterior coating Gas Ports Are Not Drilled New production Barrels are WBP serialized and include date caliber stamps QC Checked with Zeiss Coordinate Measuring Machines WBP based in Rogow Poland is now offering their AK barrels for US shooters to install on their favorite rifle or DIY kit build. WBP is well known for their high quality AKM-AK47 series of firearms and they are now expanding their offering of parts. Each barrel is button rifled and produced on state of the art precision gun drilling machines to insure a high quality product. The barrels are are gas nitrided treated inside and out to provide corrosion resistance, increased strength durability and long service life.Each WBP barrel goes through extensive testing using a Zeiss CMM , Air gauged and endoscopic camera to ensure a quality barrel. WBP Barrel Check List Mechanical shape check Mechanical caliber check Cartridge chamber geometry check Air gauge check Zeiss CMM check Digital roughness measurement Mechanical measurement of fields and grooves Mechanical straightness measurement