S-tier:

AK-47: The embodiment of long-shot stability. Slow-firing? Yes. Yet compensates it with solid damage, great effective distance and near-zero recoil, especially with the MLOK barrel

SCAR: It's very close to AK in terms of range and damage stability, but it lacks its perfect stability in exchange of higher fire rate. So these two are interchangeable

MCX: I played with this one the most, and can say that it still can ruffle feathers well enough. High fire rate, stable damage and low recoil is what I like about it

FN2000 (or just F2000): Basically a direct upgrade of the rapid-fire VSS (aka Val), but we'll get to it later. Very high fire rate is both a pro and a con: it melts enemies like heated knife cuts butter, but gets out of ammo very fast. And yet that guarantees you can overplay enemies quite good

QBZ-95: Basically the best armor-melting weapon in the game. AP mags + 3-round bursts? 3 bursts to kill a player with the level 6 armor. That's all it is.

HK416: Also a very nice gun. Essentially is an upgrade to MCX with higher mobility and better recoil control in my feeling

URB: Despite it being 3 years old (!), it still gets quite nice, in my opinion. Great hip-fire accuracy, very good damage that compensates slow rate of fire and zero recoil, which's nice

MP7: Heavy Trigger literally solves its unstable DPM issue, so I'm speaking on this half. Its high rate of fire (even with Heavy Trigger) and nice hipfire accuracy combined with high mobility makes it a must have for an aggressive player

Thompson: The best. Hipfire. Accuracy. That's all you need to know. Combined with great DPM, it makes it the best hipfire weapon with its own caveats, mainly mobility

M82: This piece of iron literally replaces 3 out of 5 (I don't count the Compound Bow as a sniper rifle) sniper rifles easily. High damage, best range (if I'm not wrong) and versatility makes it one of the most used sniper rifles at the moment

S868: Also a must have for a aggro player, IF you know how to close distance with the enemy. Excellent damage (2 direct shots to kill a level 6 armor guy or 1-2 shots up to level 5 armor is insane) coupled with great hipfire AND ADS accuracy makes it a force-a-nature (no pun intended)

Glock: Hands down, it's the most universal pistol in the game, prove me wrong

Magnum: The insane part here is that THIS is BETTER than the SVD. HOW, NetEase!? If without jokes, though, the versatility of its roles - from western-style revolver and a pocket shotgun to a sniper revolver with insane rage, - makes it a good replacement to Glock

A-tier:

KAG-6: The old man still got quite some juice. Yet the random ADS accuracy makes the only problem for it to be an S-tier

AUG: An underrated AR, in my opinion. It does everything KAG-6 does, with better accuracy, but it's a bit heavier, so it's interchangeable

Galil: Basically an intermediate between AK and SCAR. Good damage, high stability, biggest magazine of its class (100 rounds), but pays off with extremely bad handling for an AR

Spear: Initially, it was pretty good (and I honestly always hated the thermal sight - how y'all folks use it?), but when they increased its recoil, it became hard to use on long range

Vector: On release, it was very good. Great hipfire accuracy, nice DPM and a high capacity mag. But its weak damage output (don't look at 20+ damage it says - most you'll get is 19 most of the time) breaks all the illusion

P90: Low recoil great DPM, but sucks at mid-range. 5-round burst mod fixed that issue, but it creates another one: extreme recoil. That's why just A-tier

UMP45: We all remember how it dominated because of the goddamn laser sight's buffs for handling and mobility. But recent rebalances made it a little worse, so it's not as dominant as before

PP-19 Bison: Hear me out. It's actually very interesting, especially the RIP mags. Yeah, it pickles the armor not really good, but as soon as you do... It's best if your enemies run because 35 (!) damage into the body is INSANE!

RPK: Almost on the same level as AK-47 is, especially with Dumdum mags. But there are two issues: awful handling and bad mobility. So you'll have to make sacrifices. That's why A-tier

M700: It's pretty good, but the next gun in the list literally does its job better, in my opinion

Kar98K: Literally the better M700. Very similar damage profile, but with much better mobility and handling

M1887: Pretty much interchangeable with S868 depending on how you play. State Governor + incendiary rounds do their job too good, in my opinion. But I like instant results, that's why I select the double-barrel

Desert Eagle: Its random accuracy is its issue. You deal decent damage, but you have to hit the enemy first. That's not how a good sidearm should be

B-tier:

M4A1: Do I have to explain...? Alright, I'll explain. For a starter gun or something you pick off of ground, it's good. No doubt. But its identity crisis is what it kills. You either get a mid AR or a god-tier SMG (yes, hello LVOA barrel). That's why it can't be higher than B-tier

AR97: I didn't play before the Sniper mags got nerfed, so I might be more subjective than I wanna be. Sniper mags still rock well... on mid-to-long range. CQC? Forget of it. It won't forgive your mistakes. And the opposite happens the other way. It performs well on close-to-mid ranges, but as soon as you go further, try to hit your shots

VSS (actually a weirdly assembled AS Val): By default, it acts like a DMR. It was even worse than it is now because of the old mag capacities (10-30, now it's 20-40). As a DMR, it's fine, but you have to aim into the head to get those sweet 3-round headshot kills and specifically use the incendiary rounds. As a rapid-fire AR, it's terrible. Its damage output is awful, the rest of the stats are fine. Despite saying 23 damage, most you'll get most of the time is 18

SKS: Also an identity crisis. As a DMR, it sucks ass. Yeah, extremely nice damage... up to 35 meters. But for further, forget of those sweet 3-shot headshots and pray there isn't a Emma that sneaks behind you with a MP7. As an AR, it's great... up to 35 meters (ironic, isn't it?). Reason being, extreme recoil. Yup. That's the issue.

MP155: Actually, it ain't half bad. My beef with it is the slow fire rate for a semi-auto shotgun. Like, come on! Okay, one flechette deals 50 damage, power's power. But that ain't no reason to make a semi-auto shotgun slow-firing

INP-9: AFAIK, before AP mags were added, it was called the worst SMG of the game. But when they were added, they ain't no bad, don't get me wrong. It still get the flesh badly

MP5: This one was actually my favorite before, but the more I played with it (especially recently), the more the visual shake began annoying the living hell outta me. Like, it's still fine, even deserving A-tier, but this is my tierlist, so B-tier

Uzi: As I see it, it should've been a replacement to good ol' URB. Yeah, it performs fine and all, but slower fire rate and random accuracy (both hipfire and ADS) broke that idea to me. If we count Akimbo - forget of it. If not point blank or sliding, you won't hit shit

PKM: This is a meme weapon. Like, a LMG with near-point hipfire accuracy and that can flawlessly hit shots even beyond 50 emters hipfire? That's fun. But the DPM won't allow you to have too much of it. And no, incendiary belts aren't a reply - they'll make it oppositely worse

Compound Bow: It's a bow. I can't set it above B-tier. Yeah, the explosive arrows make it a very curious area denial device or even a troll weapon, but not above that

SVD: The fact that a revolver chambered in a much smaller round does its job better is baffling me

RPG: That's a missile launcher. One-charged, on top of that. And yep, it doesn't one-shot players with level 6 armor

C-tier:

Scorpion: I literally see no reason for this thing's existence. Its rate of fire is much slower than the sound shows it, DPM's terrible, and the carbine kit makes it even worse. I believe that it's NetEase that set wrong stats for it

Minigun: Minigun as a normal weapon is a cool concept and all... but a weapon that most would rather use for hipfire has terrible hipfire accuracy. Really?

Kala: It always was pretty bad for most players. Slow, clunky, only thermites were saving it. But since M82 got added, I see no reason in using it except you didn't unlock M82 and need thermites

Origin-12: I just don't get it. For low-tier armor, it's fine. For higher tiers, it'll take very long if not point blank. Not D-tier only because of Dragon Breath rounds

D-tier:

FAL: Do I have to explain this one too...? Fine. I suppose it was made as a 'better DMR VSS', but it failed drastically. Low damage output, slow fire rate, inconsistent accuracy and bad handling in one gun is a terrible idea

September Weapon Tierlist (in my opinion + explanations why)