Wanted Parts Wanted: TM G19 GEN 3 Outer barrel

I am looking for an outer barrel for a TM G19 Gen 3 - must be a Gen 3 as the hop is different. I want to extend it to take a comp, so it needs to be the original plastic one. I'd consider a threaded replacement if the price is right however. I looked at the aftermarket ones but they seem to cost more than I paid for the whole pistol!