I'm asking if it fits.the problem with that mount is you re adding height on the sights and there is a change you cannot see them anymore.
I dont see my open sights with my regular scope mount anyway... also the 612 is made by a completely differebt company..you will still not see the open sights once fitted. and the system made for 412, 412s. 512 and 612s but i do not know what kind of mount is working on the petra if your 412s system works then the 612s should work.
I dont see my open sights with my regular scope mount anyway... also the 612 is made by a completely differebt company..
thanks for your input though............