And in further news...
Your group of PCs are moving through the ruins of the eastern German city of Suhl. They camp for the night in some old factory buildings that from the look of the wrecked machinery, used to be a gunsmiths.
Digging through the ruined furniture found in a cellar in the hopes of finding something they can use as firewood they instead find a padlocked door.
Naturally, they break the padlock and look inside the room... to find some old documents and old rifles ready for the museum and a crate of 7.62x39mm StG44 rifles...
Except they aren't StG44's and they aren't even modified StG44's. They look like product improved versions and they were definitely manufactured to be the way they are (as opposed to modified) and they are definitely chambered for 7.62x39mm.
Wait. What?!
While there was some further development of the StG44 and StG45 rifles in the West that we are all pretty much aware of (e.g. HK G3 & MP5 etc.etc.), it seems East Germany did their own investigations into those designs.
The following link to The Firearms Blog shows pages from a Czech language magazine with some details on an apparent development within the DDR to improve upon the StG designs. Very little is known including the name given to the rifle, the Czech magazine calls it simply the "samopal v NDR" (basically translated as "automatic of the DDR")
http://www.thefirearmblog.com/blog/2...44-derivative/
And this is the link to the Czech forum were the images were originally posted (the post is fourth from the bottom of the page and it's the first post from the bottom to have images attached)
http://forum.valka.cz/topic/view/11593/DEU-StG-44
EDIT: Apparently it has a three-round burst setting and is called the StG59, some limited info can be found on the wiki page for the HK G3 under the
East German part of the Other military variants and derivatives
listing. The information is listed as being sourced from a Czech magazine - Střeleckém magazíně, Samopal NDR, 08/2002, str.20-21 - although there is a discrepancy regarding the magazine size, the magazine data says 20-rd while the wiki listing gives 30-rd but nothing I could see in the magazine article provided by the Czech website indicated a 30-rd mag (however my ability to read Czech is limited to recognizing a few words and that's about all).
https://en.wikipedia.org/wiki/Heckle...3#East_Germany