Im wondering about the tank O.D. if it was a common scope tube diam like 30mm maybe a scope ring on the end?
from what i can gather the tube is 32mm.
but like was said,
there is no room between the barrel and tube,
unless you pull the long top rail and shroud off,
then you could use any of the slide on 3d printed bipod mounts designed for the pp750.
fx makes a tube clamp that "should" fit,
but it only ads a swivel stud,
you could run an adapter that turns the stud into a rail,
but myself i hate those swivel stud rail adapters.
in my search i stumbled upon something that i think will solve the problem,
but it will be another day or so till i have it in my hands.
i dont know 100% if it will work yet,
but the air venturi quiver and bipod mounting bracket from pyramyd looks like possibly a win,
and at only $12.99 i decided id grab one to try.
i figure the most ill have to do is take it to the belt sander and widen the gap at the top so it won't touch the shroud/rail.
stay tuned lol