This BCA AR-10 complete 22-250 rifle length upper has a 20" black nitride heavy barrel, and features a 1:14 twist rate, with a rifle length gas system. It includes a 15" MLOK Rail, an M4 flat-top billet upper receiver, a BCA AR10 bolt carrier group, a flash hider, and a side charging handle (Gen 2) (patent pending). This upper is compatible with a 1st gen DPMS low profile AR10 lower assembly. .22-250 is a high-velocity round that is an extremely accurate and flat shooting target shooter and varmint hunter. Check out more .22-250 uppers!Check out Magazines here! (NO MAGAZINE INCLUDED){{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"}}It is the responsibility of the consumer to ensure all state, local, federal, and ITAR regulations are followed.