Basically M1 Garand hit by a Japanizing beam courtesy of the IJN (which is why she has a sailor uniform). ...And then it changed her skill to something actually vaguely useful.

Every 3rd shot she fires is a line AoE that doesnt miss, but sadly cant crit. This is actually pretty cool at night vs evasive enemies, like Uhlan formations in a post CT-environment (Uhlan formations start having evade), though actually a bit of a DPS loss on nonevasive enemies.

Not exactly a normal use rifle, but the niche she has comes up fairly often so having 1 on hand is useful.

An RF that was originally slated to be so good that they nerfed her before her release. Unfortunately this current incarnation is nothing special. +30% each to Crit Damage and RoF is a ballpark 65% DPS increase, +/- a bit due to RoF depending on the level yours is, assuming 100% crit rate. This is... not inspiring compared to what some other rifles you already have might put out. You can fit her on whichever style RF team if you want to use her. If you want a top end version of this, use R93, who has a better version of the gimmick.

A doll that was forgotten for so long I couldn't find a cleaned up version of her image outside of moegirl.

Her skill does different things depending on whether its a day or night battle. Crit and Damage during the day, Hit and RoF at night.

She's not actually bad, just that she's not exactly overwhelming good, so she just... kinda exists?

And then Shattered Connexion happened and she was helpful against a certain enemy type, but that's far in the future. For now, eh... raise or don't raise, whatever, you'll be fine either way.

The pinkhaired tryhard who is absolutely every bit as good as she says she is. 1 of the best sustained DPS ARs in the game, and can actually hit the RoF cap on her own. She can actually outDPS OTs-14 and 9A91 at night against up to moderately armoured opponents (moderate. Dont try to send her vs Hydras)

As a bonus, her mod skill ups her DPS some more by making her pull out ANOTHER gun and throwing extra attacks that do a % of her main damage, with more damage if paired with M4Mod.

Her mod skill however, does look absolutely retarded unless you're in her mod 3 form. Normally she's supposed to pull out another gun, but since her school skin and base sprite dont have that animation, she instead fires from her scope.

A swiss straight pull bolt action that SOMEHOW apparently fires faster than Semiautomatic rifles (She literally shoots faster than WA2000). That joke about the swiss replying to the Germans that if half a million of them invaded, the quarter million strong militia would shoot twice and go home? Someone sure took it to heart.

The downside of course is she debuffs her own accuracy when she does. This is not a problem during the day, and usually isn't a problem vs armored enemies, but it does become problematic when enemies at night start having dodge scores even while armoured, making her less good at those sorts of targets. In broad daylight though, go nuts.

Also a lot of artists seem to give her yandere qualities for whatever reason. Probably the knife.

Or SKS for short. Self-buffs RoF, but with too weak stats. Between G43 and M14 you have enough good low-rarity rifles to keep you supplied while you work on better ones.

Does not go ping. Not to be confused with the M1 Garand.

She's a RoF rifle, but her stats are even worse than the only borderline useful G43's. Don't bother.

Like SVD but with +Acc and lower +RoF. Really wants to be used in the 7 position. You might find a use if you still lack either SVD or WA2000 or if you really hate high EVA targets.

This goes in particular for gundams, who have armour and evasion, at night. Grape, M200 or even Kar98k are vastly preferred, but T5000 is much easier to get, so YMMV.

Similar to G41 in performance (actually slightly worse, but not significantly) and the artist just drawing their weird fetishes that land you in jail. She's basically a 5 star equivalent of Tavor sharing the primary weakness of taking 6s to startup instead of 4. The skill is good while active, but YMMV.

Honestly, the issue with any AR outside of the big mod ones, is that they just get gapped so hard unless they have a niche. ART556 does not. So you could use her, but....eh...?

Extra notes available.

A high RoF Rifle with good stats. Probably the best one for general use. If you've noticed by now, high RoF rifles are kind of good. Actually caps RoF if paired with Calico, allowing you use other damage boosters instead. With the October 2018 patch, RoF cap is higher, and Calico alone is no longer enough.

Civilian version of a gun even the Chinese Army realized was a bad idea. Used to have a niche use for battles that needed fast skills due to her low initial cooldown, excellent uptime, and unique equip, putting her in a good spot as a second-string AR. Unfortunately, there are now lots of good ARs, and the existence of chips has improved a lot of other ARs while she got left behind.

Actually good for the same reason WA-2000 and M14 are. Sheer RoF with decent damage. The only 4 star rifle worth using by default who does not require you to jump through hoops to even matter.

She's one of the dolls of all time. Yup.

AKA ST AR-15, aka Star-chan. High stats, two accessory slots, and Unique Ammo (that you need to farm for) that outperforms regular HV ammo and doesn't require forever to build up. While not considered as OP as she once was, she remains a good unit to raise; if you partially raise her, she basically hits close to RoF cap on her own.

Her mod (and her equipment set) brings her back up to a decent spot as an AR. You can see her mod here

"Are you THAT short on ARs or need cheap equipment that badly?"

You get much better ARs from story events, and there's only so much that you actually need. If you need a cheap AR and already have FNC though I guess she can be useful.

Her exclusive, while it does give her more strength, doesn't let her outperform many 4* ARs.