Rock River arms / Specna Arms edge 2.0 has the Orion gear box and a gate x asr trigger system , mosfet Rock River lower receiver and quick change spring system WILL COME WITH 1 magazine canted tac rail as seen in post as well as the tracer unit Will also come with 400 fps spring Gun has no issues what so ever, I don’t use this gun very much at all as it’s not very practical for CQB It has a great range to it and makes a great large field battle weapon… FOR SALE OR FOR TRADE FOR A NICE HIGH CAPA OR GBB PISTOL OR WHAT YOU GOT WORTH THE TRADE