FN Herstal FAL
The Right Arm of the Free World
One of the few ARs to offer multiple grenades in one skill. 6s to drop 3 intermediate grenades (ironically making her closer to the AR of the grenadier world, in a sense) which can cover a nice hefty area. Kind of shitty in day battles because frankly, shit won't (or shouldn't) live long enough to even fire a grenade, and she's meh as an actual AR.
At night however, the wide area, and the fact grenades ignore armor and evade make her a decent supplement for nuking scouts and the like, with limited anti-armor capability if you need it. Shines especially in floors 95-99 of Defence Drill for those reasons.