hi richard,
i will take the hw80 barrel
the piston ,, does it have a screw thread at the front ? if so its for a leather, if it has a a slightly smaller diameter end with a bit of a lip on its a plastic head, ,, sorry the description not that clear but i think you,ll see what i mean, if you can let me know then i will get a cheque in post or if you do paypal i can do that too, just let me know preffered method
many thanks
paul