Bringing my old post back without it being considered necromancy, I suggest once again upgrading certain shotguns, americans are all ok, so japan don´t need because they share same one, HOWEVER, soviet TOZ-B and Drilling need some love, first one need more range and dispersion, second need a working third barrel and allow the option to have the scope or not, also make double barrel shotguns have a special unique thing in case you have the reload perk, so you can reload both bullets with one hand
Drilling Scope
3 barrels with ammo
frontal view
reload concept