#html-body [data-pb-style=O1MW6T9]{justify-content:flex-start;display:flex;flex-direction:column;background-position:left top;background-size:cover;background-repeat:no-repeat;background-attachment:scroll}#html-body [data-pb-style=GT6KCYH]{margin-bottom:20px}{{widget type="Magento\Cms\Block\Widget\Block" template="widget/static_block/default.phtml" block_id="189" type_name="CMS Static Block"}}This BCA AR-15 complete 5.56 Nato rifle length upper has a 16" M4 contour barrel with a 416R stainless 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 billet upper receiver, a BCA bolt carrier group, a flash hider, and a side charging (Gen 2) handle (patent pending). This 5.56 Nato upper is compatible with any mil-spec AR-15 lower. Shop more 5.56 NATO 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"}}