just trying to disassemble the BRNO ZKK 600 series bolt. I know you're supposed to lock the bolt, then push the disassembly catch down on the LHS and pull the bolt handle back up again, leaving the cocking piece and firing assembly easy to unscrew...HOWEVER,,,when I push the 'disassembly catch' down (about 0.5mm??) and turn the bolt handle back up anti-clockwise,,,nothing happens???
am I now doing it right, are you supposed to be able to push the disassebly catch down further?