[Xenon]

There is a difference between this drone:

SR5 p. 466 Aztechnology Crawler
This small crawler can easily handle stairs and other obstacles. Designed to operate as a remote snooper in rough rural or urban terrain....
That probably look something like this:



And this:

SR5 p. 433 Smart firing platform
This is a non-mobile robotic tripod equipped with a remote control pivot that allows for a 180-degree firing arc and a 60-degree inclination.
That probably look something like this:

[Herr Brackhaus]

Smart Firing Platform requires the weapon to have an underbarrel mount, which in and of itself imposes restrictions. No SMGs, for instance, though you can use Heavy Machine Guns on them. Weird, I agree.

[Ursus Maior]

To be honest, putting a submachine gun on-top of a full-sized tripod with added matrix connection and sensor module (aka smartgun) would be a bit weird.

[Adamo1618]

Can't seem to figure out why so many disagree with Namikaze. He's got solid points, the facts to support him, and he is working with the game, isn't he? XD

Oh btw, I just assumed you are a man, Nam. Is that a correct assumption?

Also I'd say that mount size is limited by the vehicle size. Sometimes you can't put it in a spot because there isn't enough space. When putting something atop a tripod the sky is the limit (or the room size).

[jim1701]

Can't seem to figure out why so many disagree with Namikaze. He's got solid points, the facts to support him, and he is working with the game, isn't he? XD

Oh btw, I just assumed you are a man, Nam. Is that a correct assumption?

Also I'd say that mount size is limited by the vehicle size. Sometimes you can't put it in a spot because there isn't enough space. When putting something atop a tripod the sky is the limit (or the room size).

If you check the this FAQ thread for Missions you will see (for Missions anyway) that heavy mounts are for heavy weapons.  Hopefully once the next round of errata is eventually released for the core book (or the next edition of Shadowrun, whichever comes first) they will clarify it for the overall rule set as well. 

I would point out that mount size IS limited by the size of the vehicle/drone.  The BOD rating determines how many and what size mounts can be added aside from the special rule for Roto-drones. 


Edit:  I would add though, that as the GM it's up to you to decide how the rules will be interpreted.  The "official" rules only truly matter when it comes to "official" games such as Missions.  Of course, the only game I have access to right now is a Missions campaign so the distinction is pretty important to me but YMMV.