As you shoot Ged and probably have no interest in getting the Mercury up and running, you would probably get more for that as spares than you would if you bought the missing bits. I hate to say this, but the recent postage increases will probably kill a lot of the lower end of the market and also a lot of Flea bay as well. Weighing up what a piston,bracket and
stock would cost, unless you wanted the gun, I don't think it is worth the time and trouble.
The Meteor, being complete, would probably be better sold complete. However, it is finding a face to face deal or someone willing to pay £13+ postage. It could pull more on Flea bay if you want the hassle of listing and posting. As the cylinder,piston,cocking arm and barrel will fit all the mk1-mk4 meteors, they are not exactly rare. You may pull the money for a stock, working trigger and the end cap if it is a metal one??? (not checked
).
Yes it looks metal.