The 310 was, when I was a kid, THE MOST COMMON rifle used in Side Show Shooting Galleries. I remember the GREAT sense of satisfaction when I could finally cock one alone and shoot I have the one I bought NIB around 1982 and use it to shoot troublesome frogs in my ponds now
So possibly a generic magazine? That might fit an Anschütz? And u asked what does it fit. Not fair lol
not related to my new work. Posted it back when I was trucking. Not related to trucking. a thingy here is the pic again and clue : hint: enormous size fits thru a microscopic hole in it.
common in very developed rich countries and cities, mostly in the dense urban core. Non existent in rural areas or smaller cities.