assault rifle as a preorder weapon?

[Jebediah Morningside]

I've searched around the web, but stores seem only to offer pistols, sniper rifles, shotguns, small machine guns as pre-order items. Is there a shop that offers assault rifles?

[Pasha]

I didn't see any.

I guess you already know it but anyway: you can choose class with assault rifle as starter weapon. Also there will be 2 assault rifles in Mount Tam storyline quests (i.e. during first hour of playing).

[Shismar]

I've searched around the web, but stores seem only to offer pistols, sniper rifles, shotguns, small machine guns as pre-order items. Is there a shop that offers assault rifles?

No need for a preorder weapon of any kind, really. They are quite abundant. The episode quest line also has an assault rifle as reward. Fun line and a good weapon.