This Bear Creek Arsenal AR-15 Complete 7.62x39 pistol length upper has a 8.5" heavy barrel with a parkerized finish, and features a 1:10 twist rate, with a Pistol length gas system. It includes a 8" MLOK rail, a M4 flat-top forged upper receiver, a BCA Bolt Carrier Group, Flash Hider, and a rear charging handle. This 7.62x39 upper is compatible with any mil-spec AR-15 lower.This upper features a 7.62x39 enhanced firing pin for increased reliability for steel cased ammo and upgraded bolt.Shop more 7.62 x 39 Uppers!Magazine not included. Check out Magazines here!{{widget type="Magento\Cms\Block\Widget\Block" template="widget/static_block/default.phtml" block_id="56"}}{{widget type="Magento\Cms\Block\Widget\Block" template="widget/static_block/default.phtml" block_id="98"}}{{widget type="Magento\Cms\Block\Widget\Block" template="widget/static_block/default.phtml" block_id="91"}}{{widget type="Magento\Cms\Block\Widget\Block" template="widget/static_block/default.phtml" block_id="42"}}