I've been asked about an HW77 K someone has bought and have been asked to ask for a bit of advice on here.
It's serial number is 1007557 So which Mk is it? Is it also a 25mm piston seal? Can you get to the breech seal to change it easily? Can you strip the gun fully without a spring compressor?
AND ---this is the important bit -----It is missing the lock up set up on the cocking arm. What set up should this be? Is it different for different Mks?
Would I be right in thinking there is a plunger and a spring in the housing on the barrel rather than on the cocking arm?
Sorry for all the questions but totally new to me and something I wouldn't have an interest in myself.
Thanks