The BCA AR-10 Barrel is a 22" light-weight profile barrel made of 416R steel with a stainless steel finish, a rifle length gas system with a 1:8 twist rate. The barrel is chambered in .243 and machined with AR-10 feed ramps in the barrel extension.This barrel features our lightweight barrel profile which reduces weight by 1 lb. over traditional contours. All Finished Barrels go through a 100% Inspection Process. Inspections Equipment includes CMMs and Air Gauges for the Bores {{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.