This BCA AR-15 Complete 350 Legend rifle length upper has a 18" heavy barrel with a 416R stainless steel finish, and features a 1:16 Twist Rate, with a Carbine length gas system. It includes a 15" MLOK Rail, an M4 upper receiver, a BCA Bolt Carrier Group, a Flash Hider, and a Side Charging (Gen 2) Handle (patent pending). This 350 Legend upper is compatible with any mil-spec AR-15 lower.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"}}