CS2 AUG vs SG 553: The 100-Damage Headshot Problem

The AUG deals exactly 100 damage to a helmeted head. Not 101. Not 110. One hundred, against a player who has one hundred health.

That is a kill, and it is a kill by the smallest margin the damage system can express. Counter-Strike 2 reduces bullet damage with distance — both of these rifles carry a 0.98 range modifier — so the moment the target is far enough away for the AUG to lose a single point, the one-tap is gone and you are in a two-shot duel you thought you had already won. The gun does the same trick a second time on the body, which we will get to.

Its Terrorist counterpart has the opposite problem, or rather no problem at all: of the seven assault rifles in Counter-Strike 2, the SG 553 is the one whose damage body armor does not reduce by a single point.

Seven rifles, five slots

Counter-Strike 2's loadout system is a budget, not a shop. Valve's release notes for June 6, 2023 set it out: "Players have 1 Starting Pistol slot, 4 Pistol slots, 5 Mid-tier slots (previously 'SMGs' and 'Heavy'), and 5 Rifle slots, per team."

Four categories, fifteen slots, and no separate sniper tab — which puts the AWP, SSG 08 and the autosniper in the same five Rifle slots as everything below.

Count the Counter-Terrorist side: FAMAS, M4A4, M4A1-S, AUG, SSG 08, AWP, SCAR-20. Seven weapons, five slots. Two CT rifles do not make the loadout, and the AUG is $400 more expensive than either M4, so it is permanently on the bubble.

The Terrorist side has six candidates for the same five slots — Galil AR, AK-47, SG 553, SSG 08, AWP, G3SG1 — so a T only has to cut one. That asymmetry is worth holding onto, because it means the AUG has to beat a shortlist while the SG 553 mostly has to beat inertia.

Every assault rifle in CS2, priced

Seven assault rifles exist in Counter-Strike 2. Here they all are, with the Counter-Strike Wiki's damage figures and the arithmetic done:

Three of the seven kill a helmeted head with one bullet at point-blank range, and the two scoped rifles are the two most expensive guns on that list. The AUG at $3,300 is the most expensive assault rifle in the game, $600 clear of the AK-47 and $400 clear of both M4s. The SG 553 at $3,000 is the most expensive assault rifle a Terrorist can buy, though the AWP at $4,750 and the G3SG1 at $5,000 cost more from the same Rifle slots.

The AUG is the exactly-100 rifle

Here are the two guns side by side, every number the wiki publishes for them:

The AUG lands on 100 twice. Once on the helmeted head — 100 damage against 100 health — and once on the armored chest, where 25 damage across four shots comes to exactly 100 as well. Neither threshold has a point to spare.

That matters because both rifles carry the same 0.98 range modifier, so their damage decays along the same curve. Identical falloff, different starting values: the SG 553 begins its helmeted-headshot check 19 points above the line, and the AUG begins it on the line. The distance at which each gun stops one-tapping a helmet is therefore not close, and the AUG's is as short as it can possibly be.

None of that makes the AUG a bad rifle. It makes it a rifle whose headline stat is conditional, and the condition is "at point blank." Treat the one-tap as a close-range bonus rather than a plan and the gun stops disappointing you.

The SG 553 ignores body armor completely

The wiki lists the SG 553 at 100% armor penetration — the highest figure among the seven rifles in the table above. What that means in practice is easier to see than to say: its armored and unarmored numbers are the same number.

Buying a vest does not change a single figure in that column. Every other assault rifle in the table above gets worse against armor — the FAMAS drops from 120 to 84 on the head, the M4A4 from 131 to 92, the M4A1-S from 132 to 92, and the AK-47 from 143 to 111. The SG 553 does not drop at all, which is why it kills a helmeted target with one headshot with a 19-point cushion, the largest of any rifle here.

Against an unarmored enemy the picture inverts: the AK-47's 143 to the head and 35 to the chest beat the SG's 119 and 29 outright. The SG's advantage is a defense-penetration advantage specifically, and it only exists because the enemy spent $1,000 on a vest and helmet — $650 of that is the vest, and the helmet only comes in the bundle.

Where the armor advantage quietly disappears

This is the part that is easy to talk yourself into and hard to justify with the table.

The SG 553 does 29 to an armored chest. The AK-47 does 27. Both need four bullets to reach 100. On an armored chest, the SG's entire armor-penetration edge over the AK-47 buys it nothing at all.

Same story against the AUG's 25 — also four. The armored-chest shots-to-kill column separates the seven rifles into 4 and 5, and the SG's 100% penetration lands it in the same bucket as the AK-47, the AUG and the M4A1-S.

Now put the fire rates in and the picture flips again. Four shots means three gaps between bullets:

At 545 RPM the SG 553 fires slower than any other assault rifle in the game — the AK-47, AUG and M4A1-S are 600, and the M4A4, FAMAS and Galil AR are 666 — which costs it roughly 30 ms on a four-shot chest kill against the AK-47 it is meant to upgrade. Pay $300 more, kill an armored body a fraction slower. The case for the gun lives entirely in the head row and the scope, not in body damage.

Fire rate, reload, and the March 2026 ammo rule

The AUG reloads in 3.8 seconds, longer than any other assault rifle in Counter-Strike 2: the SG 553 takes 2.8, the Galil AR 3.0, both M4s 3.1, the FAMAS 3.3, and the AK-47 just 2.4 — a full 1.4 seconds faster than the AUG.

That gap got more expensive on March 18, 2026, when Valve refactored reloading: "When you reload a magazine-fed weapon, all remaining ammo in the magazine is discarded and a new, full magazine is taken from the reserves." Reserve ammunition is now shown as magazines, shells or bullets depending on the weapon, and Valve tuned the reserve magazine counts per weapon — "most have gotten a three clips fill-up," per the update announcement.

So a habit reload on the AUG costs you 3.8 seconds and whatever was left in the mag. The M4A4 vs M4A1-S guide works through what that rule does to small magazines in detail; on a 30-round scoped rifle the practical version is short. Reload after a full engagement, not after a two-shot trade, and never mid-rotate if the reserve is thin.

What the 3x scope actually costs you

Both rifles scope with secondary fire, both zoom 3x, and both drop to 150 hammer units per second while scoped. Unscoped, the AUG runs at 220 and the SG 553 at 210 — no other assault rifle is slower, with the AK-47 and Galil AR at 215, the FAMAS at 220 and both M4s at 225.

The scope reduces recoil and increases accuracy on both guns, and neither takes the fire-rate penalty their pre-Global Offensive ancestors did. What it takes away is peripheral vision and turn speed, and it drops your run to 150 units per second from 220 on the AUG and 210 on the SG 553. Scoping is a commitment to one angle, which is the same trade the AWP guide covers for the actual sniper rifles.

One detail worth knowing if you are setting up a config: Valve adjusted the AUG and SG 553 scope dot sizes in the October 2, 2025 update and added game options for dot scale and sniper rifle scope thickness in the same patch. The crosshair settings guide covers the commands.

Neither gun has been rebalanced since April 2020

I went through Valve's own release notes from July 2021 through the August 19, 2026 update looking for any change to either rifle's price, damage, armor penetration or rate of fire. There are none. Every AUG or SG 553 entry in that window is cosmetic or a bug fix:

The last balance change to either weapon was April 10, 2020, in Global Offensive: the AUG got improved standing accuracy while unscoped and slightly reduced scoped accuracy, and the SG 553 had its rate of fire and accuracy reduced "to bring the weapon's value to be more in line with other rifles."

The prices have been stable even longer. The AUG returned to $3,300 on March 13, 2019 after a five-month experiment at $3,150, and the SG 553 went to $3,000 on November 18, 2019. Both figures are still current. So unlike the M4 debate — which Valve has repeatedly repriced — this comparison is settled by numbers that have not moved in over six years.

Numbers I could not verify

Two, and both concern ammunition.

The wiki lists 90 rounds of reserve ammunition for both the AUG and the SG 553, which would be three spare 30-round magazines and matches Valve's stated default. But the March 18, 2026 update explicitly says reserve magazine counts were tuned per weapon, and the wiki's AUG and SG entries carry no CS2-specific qualifier the way the M4A4, M4A1-S, Galil AR and FAMAS entries do. Check the reserve counter in game before you plan a round around it.

The second is the accurate-range figures. The wiki gives the AUG 28 m unscoped and 36 m scoped, but lists a single 24 m figure for the SG 553 with no scoped equivalent. That is a gap in the source, not evidence the SG's scope does nothing — so I am not drawing a range comparison from it.

Which one to buy, by side

Counter-Terrorist: the AUG's case is the strongest of the two, and it is a case about headshots. Both M4s deal 92 to a helmeted head and cannot one-tap at all; the AUG can, at close range, and among CT assault rifles it is alone in that. If your CT position is a short-to-mid angle where you shoot first from a static hold, that capability is worth the $400 premium over an M4. If you are retaking, rotating or fighting past 30 meters, you are paying $3,300 for a one-tap that falloff has already taken away, and the M4 comparison covered in the M4A4 vs M4A1-S guide is the better read.

Terrorist: the SG 553 is a harder sell against its own side's alternative, because the AK-47 already one-taps a helmet at 111 damage, costs $300 less, reloads 0.4 seconds faster, moves 5 units faster and fires 55 RPM quicker. What the SG adds is a 19-point headshot cushion instead of an 11-point one, identical damage against armored and unarmored targets, and a 3x scope. That is a long-angle package — if the round plan is holding or taking a sightline, it is real. On an execute, the AK is the more forgiving gun and the $300 saved is a smoke grenade.

Either side, on a thin buy: neither. The scoped rifles are luxuries priced above the standard rifle, and the round where you cannot afford the standard rifle is not the round to spend more. The CS2 economy guide covers where that money should go instead.

More weapon math and map breakdowns live on the Counter-Strike 2 coverage hub.

Quick Action Checklist

• The AUG deals exactly 100 to a helmeted head. Treat the one-tap as point-blank only, because a single point of falloff removes it.
• The AUG also needs exactly four shots (25 each) for an armored chest — another zero-margin threshold.
• The SG 553's damage is identical armored and unarmored: 119 head, 29 chest, 37 stomach, 22 leg.
• The SG's 100% armor penetration does not save a bullet on an armored chest. It is four shots, the same as the AK-47's 27.
• The SG 553 is the slowest-firing assault rifle at 545 RPM, ~330 ms to an armored chest against the AK's ~300 ms.
• The AUG costs $3,300 — the most expensive assault rifle in CS2, $400 over an M4 and $600 over an AK.
• The AUG's 3.8 s reload is the longest of the seven assault rifles, and since March 18, 2026 a reload also discards the rest of the magazine.
• Both scope 3x and both drop to 150 units per second scoped. Do not scope unless you are committed to the angle.
• Neither rifle's price, damage, armor penetration or fire rate has changed since April 10, 2020.
• On CT the AUG buys a helmet one-tap no M4 has. On T the SG buys a bigger cushion on a one-tap the AK already had.