This BCA AR-15 complete 350 Legend rifle length upper has a 20" heavy barrel with a black nitride finish, and features a 1:16 twist rate, with a carbine length gas system. It includes the new 15" MLOK rail, an M4 flat-top billet upper receiver, a BCA bolt carrier group, a flash hider, and a right side charging (Gen 2) handle (patent pending). This 350 Legend upper is compatible with any mil-spec AR-15 lower.Disclaimer: BCA 350 Legend is susceptible to jamming on lowers not manufactured by BCA and certain ammo and magazines.Shop more .350 Legend 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"}}