thanks with your advise and help it was rather simple to post fotos;-)))) !!
thanks again

you are right its similar to blaser and herbert scheiring, but the locking
is with this franz jäger kipplauf vertikalblockverschluß even more complex as
it also locks vertically in the barrel front. this really requested an absolut
accurate master gunsmith.
this vertical kipplaufblockverschluß was developed by franz jäger & co
waffenfabrik, suhl in 1906 and was patented with "reichspatent nr.209113 on
november 23rd of 1906