This BCA AR-15 complete 7.62x39 carbine length upper has a 16" heavy barrel with a parkerized finish, and features a 1:10 twist rate, with a carbine length gas system. It includes a 15 1/4" MLOK rail, an M4 flat-top billet upper receiver, a BCA bolt carrier group, a flash hider, and a rear charging handle. This 7.62x39 upper is compatible with any mil-spec AR-15 lower. This has the new handguard.Featuring a 7.62x39 enhanced firing pin for increased reliability for steel cased ammo and upgraded bolt.Shop more 7.62 x 39 Uppers!Check out Magazines here!{{widget type="Magento\Cms\Block\Widget\Block" template="widget/static_block/default.phtml" block_id="56"}}*Note - We strive to provide the most accurate photographs of our product. Variations may occur in the skeletonized section of the handguard/flash hider you receive.{{widget type="Magento\Cms\Block\Widget\Block" template="widget/static_block/default.phtml" block_id="42"}}{{widget type="Magento\Cms\Block\Widget\Block" template="widget/static_block/default.phtml" block_id="293" type_name="CMS Static Block"}}