If one want's to assigne a "special" weapon to each human race then the question is "who benefits from what". So:
+ The Zhos with their Teleporters want a weapon that is silent but has some punch. So I'd see them using lasers as the "signature weapon"
---------------------Yeah, that is what we said too, but we also gave them the gauss rifle. They use smaller calibers than the Aslan, Sols and SWders.
+ The Vilanies have this huge empire and may want a weapon that is easily supplied and can offer different modes (kill, stun). So we give them the Gauss-Rifle
---------------------Yes, we gave them both lasers and gauss rifles. We figured that there was some parallel independent development going on here. The Imperials have Gauss rifles that have generally higher penetration at effective (short) ranges that drops off later on. Whereas the Zhos have a weaker penetration value, but that penetration remains more stable than an imperial weapon of the same tech level over the three ranges (effective, long & extreme).
+ The Solomanie are the "Have club, will use" guys of the game. So give them something rugged and useabel - The ACR. This also fits history since most money would have gone into starship research in the Interstellar War era and a good old slugthrower kills Vilanie just fine
----------------Our thoughts exactly.
+ Aslan with their duelling culture and build-in knive don't get a signature weapon. They already have the Dew-Claw
----------------We gave them spikers and bolters in addition. A spiker is just like a big nail gun. It was used for dueling or wars of assassins since Aslan time immemorial and thus survived as a weapon much longer than was pragmatic. Spikers have terribly short range, but good penetration at that short range. They are based on a technology that is similar to the gauss field, but the Aslan never developed it further. Spikers are on the scene at tech 5, and are used (because they are traditional weapons - like samurai swords would be) up until tech 13 (max Aslan) even though they are already obsolete by tech 5.
-----------------The bolters are a type of limited plasma weapon. They fire a plasma that in turn transports a dense solid shot piggy-back-style in a gravetic containment field. When the round hits something it depolarizes and the round stops transferring all its kinetic energy. Then there is the afterburn from the plasma stream. Bolters are incredibly deadly at short range, but they are inaccurate, they overheat quickly, they have no range and they sometimes have the tendency to blow-up, wounding, maiming or even killing the shooter. Bolters are supplanted by lasers at tech 8, but they, like other Aslan weapons, hang on for a while, because they have become "traditional" too.
+ Vagrs get whatever they can capture. If the need a signature weapon I suggest the Cutlass
-----------------We gave our Vargr blaster technology. We said that the Zhos invented blasters, but gave to the Vargr, because the Zhos developed the laser and found it was better. The Vargr take the blaster use it until tech 13 or so, when lasers finally supplant blasters in the Extents. Blasters work a bit like bolters in reverse. The blaster fires a round that contains a plasma held in a gravetic field. When the round hits the field drops and the plasma explodes. Its like a big HE round. So here the round carries the plasma and with the bolter its the other way around.
--------------Other than that our vargr also get an eclectic mix of weapons.
+ Swordies get outfitted like Sollies. Horned Helmets and two handed Danish Axes are optional
----------------Yep, same with us, but we said they got blasters from the Vargr and Lasers and Gauss rifles from the Zhos as well.
+ Darrians get cotton dabbers. After all they are threatening everyone with a weapon that does not exist for most of the time (Startrigger)
---------------------We gave our Darrians a good mix of blasters. Darrian blasters are much better than the Zhodani/Vargr blasters b/c they are like tech 16 leftovers, but there aren't many to go around. Otherwise the Darrians have the usual mix of slug-throwers and lasers.
+ Syleans get the most develish weapon of them all - The Diplomat Self-Deploying Offensive weapon
----------------Syleans don't appear much in our campaigns.