BCA Unthreaded barrels for Grizzly 101 & Glock 17 handguns are manufactured by Bear Creek Arsenal in Sanford NC, USA. Durable and highly accurate, Bear Creek Arsenal threaded Glock 17 barrels are backed by our limited lifetime warranty. 4150 Black Nitride Barrel Straight Fluted 1:16 Twist 9 MM Caliber Unthreaded Unbranded BCA barrels for Glock 17s are compatible with Glock Gen 1-4 pistols (not Gen-5). ALL NFA LAWS APPLY {{widget type="Magento\Cms\Block\Widget\Block" template="widget/static_block/default.phtml" block_id="42"}}