This is a hpa set up, it comes with a cm16 body with the mancraft mechanical hpa engine everything has been done to this gun pretty much, it comes with hpa tank (4500 68 cubic inch carbon fiber tank) reg/hpa line im asking $500 obo. It's still like brand new. Just dm me for the specific specs or any questions you may have. If you know your guns and know what your looking at then you know this is worth upwards up $1,200 to $1,400 gun setup.