MPC has the classic kits called Gang Busters, for obvious reasons, has guns. It's aged, so there's much work to be done but includes the Thompson (Tommy gun), shotgun, pistols as well as when there are figures in the kit, two hands are holding pistols. Plus a few crates of moonshine, a violin case, etc.
AMT makes a WWII Jeep with a couple weapons. It's the Hogan's Hero Kit.
AMT also has the Dodge squad car, last issued as the Batman The JOKER Goon Car. Comes with the police equipment: Riot shotgun, etc.
Hasegawa, as mentioned, I don't know about the weapons inside though.
And a few others surely.
You can also scratch build your own... maybe...