One other thing, ammo is a concern so if you plan to buy a rifle, budget money to buy a couple cases of ammo to go with it. AIMSurplus is selling the corrosive surplus stuff and Wolf is importing their new ammo. There are limited loadings available if that is important to you. In my case, just collecting was the motivation.
Also, look up the web site for Ohio Rapid Fire. They sell mags and have a deal for a dozen used mags for a little over $35. They have rifles also.