Bear Creek Arsenal 9mm Conversion Barrels for Glock 22 handguns are manufactured by Bear Creek Arsenal in Sanford NC, USA. 9mm conversion barrels allow you to shoot 9x19mm out of a Glock 22 which normally shoots .40 S&W by simply swapping the barrels. Durable and highly accurate, our Glock 22 black nitride threaded Glock barrels are backed by our limited lifetime warranty. 4150 Black Nitride Barrel 1:16 Twist 9 MM Caliber Full Length Threaded Unbranded BCA barrels for Glock 22s are compatible with Glock Gen 1-4 pistols (not Gen-5). Thread Protector sold separtately: https://www.bearcreekarsenal.com/guns-parts/thread-protector.html ALL NFA LAWS APPLY {{widget type="Magento\Cms\Block\Widget\Block" template="widget/static_block/default.phtml" block_id="42"}}