FAKEEDIT: Yes, but you're a low ranking Commissar attached to a single squad, not the regiment as a whole, which is probably what Commissariat is meant to represent. At best, you'd probably have a rank of Senior Squad Rank Commissioned Officer(same Logistics as the NCO version, most likely), but you could only really requisition stuff for yourself. Tech-priest and priest probably have similar things, but only 15, rather than 25, and would request from their own organizations. Troopers would have ten.
Hmmm. I've got the rulebook out(on a different tab). There's Multiple Regiments, so that starts it off well. We've been here under a week, so that's a -10. We're not technically in a front, but we're basically being supplied, so that's probably something or another. The war conditions are basically a ceasefire, meaning +30 if the GM allows. And then some of the equipment we specialize in. Hurray!
So here's a list I'm compiling of what to requisition. I'll add to it as people make requests. After all, no harm in requisitioning more, right?
But seriously, if you see something you want(like a Targeter for the Multi-Las), just ask for it.
FAKEEDITAGAIN: I'm placing the ammunition requests next to the weapon requests for ease of finding and because if either one fails, I don't need the other one, but there will probably be two different requests.
Stub Revolver
Stub Revolver Ammunition
Sniper Rifle
Sniper Rifle Ammuntion
Blind Grenades
Krak Grenades
Stun Grenades
Shield
Mono upgrades for all Swords
2 Red Dot Laser Sights
Tox Dispenser
Tripod (for the Multi-Las; if we're going to have a heavy weapon, we need a tripod.)
Charge Packs(heavy) (See below, though we might not need more ammunition for them yet; I just don't know if we have any)
Melta Canisters(basic)(should be fairly easy if not automatic, since it's part of their standard gear, just like the commissar getting bolt rounds for his bolt pistol; page 164 I think.)
Bolt Pistol Rounds
2 Flamer Packs
8 Chameleoline Cloaks
8 Clip/Drop Harnesses
8 Sets of Filtration Plugs
Auspex/Scanner
Data-slate
Set of Field Sutures(?uses?)
Set of Magnoculars
Multi-Compass
4 Stummers
Vox-caster
Targeter
Motion Predictor
2 Recoil Gloves
2 Symbols of Sanctity
FAKEEDIT3RETURNOFTHEEDIT: Solid shot can be, but each of the solid shot pistols does have an advantage over the las pistol, as well as disadvantages. Autopistols can fire fully automatic, but have a smaller clip size, take longer to reload, and aren't Reliable; Stub Automatics do more damage, but have a much smaller clip size, take longer to reload, and aren't Reliable; Stub Revolvers do more damage, but can't fire semi-automatic, have a far smaller clip size, and take a lot longer to reload; and finally, Hand Cannons do quite a bit more damage, have a Pen score, and have a marginally larger range, but take a penalty if used in one hand, have a very small clip size, take a lot longer to reload, are heavier, and aren't Reliable.