What’s the most commonly used hook to attach the gun to your belt? Is there some sort of ‘industry standard’ here or what? If it matters, I’m looking more at GB1 style.
edit: misread. i am an idiot…
I don’t have one myself, but I’m thinking that there is a hook that comes off of the bottom of the gun.
http://www.gbfans.com/community/viewtopic.php?f=2&t=4557
That topic should have some great info.
Perfect, I guess I didn’t look hard enough when I searched! 
i did this with a picture hanger.
it works perfectly with the hook / keychain belt. and its really secure.
I know it’s not accurate, but I really like this one from the other thread:
No idea where he got that kinda hook though.
Looks like they bent it themselves.
I would worry about that though since it doesn’t make a full loop.
One kinda funny thing about RGB revealed from inside one of the DVD cases is they intended to hook the gun on the belt to the keyring like the movie. You can even see the hook on the gun in some episodes though it’s never used at all in the series.