Great responses all!
To clarify; I don't mean "where are the RPGs in SR?" I'm not really sure of the technical differences between a LAW's rocket and a RPG round, or what makes an RPG round an RPG round. I mean, the RP-7 is everywhere. Former Warsaw Pact countries, and along with the AK, have flooded the world in arms since the fall of the Soviet Union. Since most SR weapons are based on or descended from whatever cool firearms exist today (note the inclusion of the Barrett weapons, which are relatively new in popular consciousness), I was wondering what replaces it in SR arsenals. The LAW and the Striker, and their equivalents, are presumably the answer. The LAW's description says it is the premier weapon of its type in the world. This makes sense when you think about it; the RP-7 was made to be simple, robust, and easy to manufacture, to arm huge numbers of conscript troops in the Sov armies. This is not a very profitable business model for arms corps in SR. So they picked a weapon system that favored their interests while fulfilling their customers need; the LAW. A one shot, cheap, disposable launcher that leaves you coming back for more once you use it.
Also, there are apparently no SR rules to differentiate an RPG from a rocket, the only distinction is dumb rocket and smart missile.
The AR stocks question has another dimension that becomes obvious when you guys answered. If the stocks are not mentioned as part of their RC or description, is it because its a no brainer that they have them, and they don't really work without one? So a stock is a requirement, and you don't get any RC for it. You can add a shockpad to it for 1, but that's all. And does anybody else feel that the shockpad is the cheapest, must have gun accessory ever?
While we're on the question of accessories; why can't you buy Gas-Vent 1's anymore? Did they just stop making them to drive up demand for Gas-Vent 2's and 3's?
Assault cannons. They're awesome. We all know this. But as has been pointed out, they're really overpowered. They're just way more than you need. And seemingly, they're more popular than their equivalents are now. I still lean towards the troll explanation. Logically though, destroying light vehicles and drones seems something they're very suited to. Also, not to quibble, but the assault cannons in SRA and Arsenal are both SS, not SA. Odd, and puts them more in the heavy rifle category. I have a terrible urge to mod one to fire FA or at least BF, and add Extended Mags to it for some truly disgusting firepower.