That is a case study in it's self. After noticing all the color variations of the wood it makes me wonder. If they are in any particular order. I'm sure they are. But just looking at the wood. I can't tell much.
Wow! Sure makes my 16 G/K 43s look insignificant!
I've also got an MG 42 - and for who ever ask, I've also got an MP 43, MP 43/1, MP 44, StG 44 AND a Bren. In addition I have about a dozen MP 40s.
Sarge