WBP AK 5.56 Barrel 16.3" 1:8 Twist 14x1 LH

[vimeo https://vimeo.com/videos/904201543] Polish AK 5.56 Barrel WBP WBP Polish AK47 barrel 5.56x45mm 23 mm barrel trunnion journal 16.3 inches long 6 grooves 1x8 twist rate Button rifled 4140 European Certified steel Nitrided treated interior coating Nitride treated Phosphated exterior coating New production Gas Port is Drilled Barrels are WBP serialized and include date caliber stamps QC Checked with Zeiss Coordinate Measuring Machines 14x1 Left hand threads 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