There's several places where other Transformers can stand and man the guns. I'm thinking of putting my wimpy little Go-Bot Prime up on the platform with the laser cannon, it's just his size. Disk-shooter, which holds 5 disks and can shoot them a few feet. Laser Cannon which can be mounted two ways, one of which allows it to be stored inside the trailer and the other allows Prime to use it while attached. This thing detaches and can be carried around with you.
Typical range is about six feet.
Looks like it can use Dreadwing's missiles as well, but I haven't checked to see if DW can use these slightly shorter missiles. Comes with two pneum-missiles and 10 spring missiles, twice as many as can be held by the launchers. Below each launcher's position is storage space for the extras. However, there's a slight problem with this, in that you have to leave the weapons loaded to store everything in the trailer mode. And this isn't a great thing.