I got this m60 in a trade recently and it is a massive mystery to me. It’s very high quality, shoots VERY hard, very solid, but I can tell that it is QUITE old. There’s no identifying markings on it. The weirdest thing is that, despite the mag pouch attached to the side of it, the magazine in INTERNAL, and gravity fed. I’m just very curious as to what this even is, and if it’s worth anything.