unique action by Immanuel Meffert in 5,6x35R Vierling

you have to push a knob to pull the breech block back, 70cm long barrel and double set trigger

http://egun.de/market/item.php?id=4609647

Here the same in .22:

http://forums.nitroexpress.com/showflat.php?Cat=0&Number=197941&an=0&page=1#Post197941

now i have both........