If it is a legit device that's still supported, it can be done, though normally it takes quite awhile as it goes back to Switzerland for most things. Terrapins are done, most PLRF 10/15's are probably done as well. Vector IV and up and other current products (PLRF 25C, Terrapin X, Moskito, JIM's are being serviced.
Be advised, devices obtained outside legit commercial channels may well be stolen military property, if the serial number links to a .MIL outfit you won't get it back.