Returning Deck Gun Scope option in OLC

[Synthesis]

I've been getting back into SH3 after a few years break, and returning to my old standby of GWX. However, I'd like to give OLC MkIIB a try again but find I'm a little too amatuerish still--how does one go about restoring the ability to use the scope on the deck gun that OLC takes away? I'm aware that it's not realistic, but early war, I really do enjoy doing some personally shooting (while you're able to).

Any help would be much appreciated.