This BCA AR-10 Complete Upper has a 18" Parkerized heavy barrel, and features a 1:8 Twist Rate, a Rifle length gas system. It includes a 15" MLOK Split Rail, an M4 flat-top billet upper receiver, a BCA Bolt Carrier Group, a Flash Hider, and a rear Charging Handle. It is chambered in 6.5 Creedmoor. This Slick Side has no forward assist or dust cover. This upper features the new handguard. This 6.5 Creedmoor upper is compatible with 1st gen DPMS low profile lowers.Shop more 6.5 Creedmoor 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"}}It is the responsibility of the consumer to ensure all state, local, federal, and ITAR regulations are followed