This BCA AR-15 complete .300 Blackout rifle length upper has a 16" black wolf fluted heavy barrel with a 416R stainless with black nitride finish, and features a 1:8 twist rate, with a carbine length gas system. It includes the new 11.5" MLOK rail, an M4 flat-top forged upper receiver, a BCA bolt carrier group, a flash hider, and a rear charging handle. This .300 Blackout upper is compatible with any mil-spec AR-15 lower.Shop more .300 Blackout 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"}}