Ex-site Rental G36C made by JG. Complete with 1 magazine, 1 LiPo battery. Various grades available:
Grade A - Like new, Used probably once, or twice
Grade B - Used several times but in very good condition
Grade C - Used old stock, cosmetic scratches wear etc but working 
 
These G36C have been regulary serviced and maintained most with new replacement gearboxes and other new parts.