DETAILS, FICTION AND REMINGTON 22 MAG AMMO

I want to locate a barrel that is definitely for just a wingmaster only? What duration will get me to original and they are there more time barrels accessible? To who must I convert Moreover ebay?So I guess the issue is, were the pretty early Wingmasters, (say a person manufactured in March of 1950 ) alright or did Remington have any early producti