Sawn-off shotgun length (was not reduced after sawing barrels)

I’ve tried to saw barrels of double barrel shotgun to reduce its volume and length, but as I see - length of sawn-off double barrel shotgun is 95 cm (same as before for original shotgun).
Do we need to fix its length?

looks like it. using the regular double barrel shotgun and a hacksaw to turn it into a sawn-off, the length is still 37 inches, though the volume and weight reduced.
it seems to be a known bug across all weapons you can saw the barrel off