I've another question to throw at those more knowledgeable, since I'm still looking for my copy of Rigger 3.
What related skill do you use for installing a mount for, say, a Vindicator HMG?
-Long story short, the wired-up sammy looted a downed chopper with one of these intact, and is thinking of installing it in the back of his van "To deter tailgaters" (They have done very bad things so some go-gangers, GANGS of go-gangers - hello group Vendetta:))
From the somewhat fanboy descriptions, he wants to keep the thing nice and neat and discreet (Players learning curve on this was long and painful), but if necessary, he can get some poor sap at the back to throw open the rear clamshell and obliterate any persuit.
I was considering allowing it - it's a luggable weapon (8kg from memory, ammo extra) and so should be reasonably-easily fixed to a gimble/swingout arm from the side of the van. The Van's cfu storage will go down, yes, but if he actually works at it, and the person working on it (Likely to be another character) I'm willing to let them play with it.
After all, it's more player money down the hole, and that's what being a GM is all about...

I haven't told them about the deafening roar of the multibarrel as it winds up and fires, or of the TN modifier's I'll apply with all that hot brass flying about inside the van...

Recoil modifers...you guys DID install them, right? With the

50 brasscatcher?

Yes, I'm a bastard. No, if they didn't think of it, I'm not going to tell them either.
-Tir