Mercury bits needed

[AKeeNShoT]

as above really, i need a barrel and a stock for a mercury, for a sentimental restoration, the gun belonged to my dad, and hasnt been seen in over 20 years, then turns up in my recently deceased grandads loft, with some irrepairable damage to the stock and a badly corroded barrel, its worth a lot more to us than binning it, so anyhelp is greatly appreciated and accepted, kindest regards, michael

[AKeeNShoT]

also its in 22 flavour, and the action, although dry, cocks and kicks. sinking a pellet into the shed.
here is a pic for reference