This archive has lots of pdf's and even videos and cad files as well: https://archive.org/details/gunplans2019
Looks like this archive got geo-restricted. If I'm reading the archive.org page right it looks like we have Denmark and France to blame for that. If anyone wants to download it without having to create a archive.org account try these links.
https://www.mediafire.com/file/j6yba8ickyle6tk/Gun_Plans_2019.zip/file
https://mega.nz/#!botCXIjS!6tRVwbxHnwNhJIDhIwufODDwi_EdlDhkxcgCUEbf-Z8
https://gp2019.webs.com/