Every figure shows its source. Where a source is missing, the number is a placeholder — and it is never written as fact.

By GamGem ResearchLast updated 6 Oct 2026

What changed — 16 Jul 2025: jumping inaccuracy 0.01843 → 0.05 · recoil 19 → 21.

CS2 weapon · SMG · CT side MP9

Valve: “A burst of damage to deny an enemy rush.” Manufactured in Switzerland, the cutting-edge MP9 SMG is an ergonomic polymer weapon favored by private security firms.

5 m20 m30 m40 m60 m
Target & armour
Buy MP9 when…

You can land several hits — a helmeted head takes 2 even up close.

Valve’s buy menu: “Consider in the first three rounds of the half.”
Buy recommended$1,250
$4,100 buys it with Kevlar and a helmet and leaves $1,850.
Price
$1,250
game data
Kill reward
$600
game data
Damage
26
game data
Armour pen
60%
derived
Fire rate
857 RPM
derived
Ammo
30 / 60
game data
Reload lock
2.13 s
game data
Run speed
240
game data
Penetration
1.0
game data
Accurate range
15.88 m
derived

Damage & kill outcomes @ 30 m

Hits to kill, by zone and armour
ZoneNoneKevlarHelmet
Head223
Chest61010
Stomach588
Arms61010
Legs888

Head vs Kevlar + helmet at 30 m: 44 damage per hit → 3 hits to kill · TTK 140 ms.

derived · damage × range modifier^(units ÷ 500) × zone × armour, rounded down

Armour breakpoints

Where head hits-to-kill change, 0–60 m
no armour
  • 0 m – 3 m1 hit
  • 4 m – 60 m+2 hits
Kevlar
  • 0 m – 3 m1 hit
  • 4 m – 60 m+2 hits
Kevlar + helmet
  • 0 m – 20 m2 hits
  • 21 m – 55 m3 hits
  • 56 m – 60 m+4 hits
Against Kevlar + helmet: 2 changes between 0 and 60 m.

Damage over distance

  • Head · no armour
  • Head · helmet
  • Chest · Kevlar
  • Chest · no armour
Here: 44 damage per hit at 30 m.

1st shot spread

Sure to hit a 30 cm plate to15.88 m

At 30 m the first shot can land up to 29 cm from the crosshair.

derived · 0.1524 m ÷ (spread + inaccuracy) — Valve’s own 30 cm plate

Spray — the first 10 bullets

Phase
10 bullets · 0.63 s of fire at 857 RPM · 20 left in the magazine.Inside the first 10 — the part guides say to learn first.

A quick, almost entirely vertical rise — worth learning. source

Valve’s recoil inputs: kick 21 ± 1 · direction variance 70.Valve’s file holds these inputs, not the path the bullets take — so no path is drawn here.

Firing mode guidance

  • spray6+ shots · inside 7.9 mCommit and pull down
  • burst2–3 shots · 7.9–15.88 mStop, then reset between bursts
  • tap1 shot · past 15.88 mReset fully between shots
At 30 m: tap.rule · ours: tap past its standing accurate range (15.88 m), spray inside half of itSpread still varies shot to shot — a guide, not a guarantee.

What beats the MP9?

Weapon · edge30 m · headCost
Hits to kill from Valve’s file at your distance and armour — not win rates. Shotguns left out: pellets decide.

Economy context

  • MP9 + Kevlar + helmet$2,250$1,850 left
  • MP9 + Kevlar$1,900$2,200 left
  • MP9 alone$1,250$2,850 left
  • UMP-45 + Kevlar + helmet$2,200$1,900 left
Kill reward $600 — 3 kills pay the gun back. Armour: Kevlar $650, with helmet $1,000 (Valve’s items_game.txt).

Counterplay tips

  • Fight it beyond 15.88 m: past its standing accurate range even the first shot is not sure to land.
  • Catch it moving: on the move its first shot is only sure within 5.14 m.
  • It needs 8 chest hits at 15 m against armour — trade it rather than duel alone.
  • It moves at 240 u/s — expect it to reposition quickly.
  • Drop its holder first: they lose a $1,250 gun, and each kill it makes pays them $600.

No — 3 hits to a helmeted head at 30 m (44 each).

Buy now or save now?with $4,100

If you lose0 kills1 kill2 kills
+$1,400after winsbuy$3,250 nextbuy$3,850 nextbuy$4,450 next
+$1,900a half’s first lossbuy$3,750 nextbuy$4,350 nextbuy$4,950 next
+$2,400buy$4,250 nextbuy$4,850 nextbuy$5,450 next
+$2,900buy$4,750 nextbuy$5,350 nextbuy$5,950 next
+$3,400the capbuy$5,250 nextbuy$5,850 nextbuy$6,450 next
rule · ours: buy when a lost round still leaves $2,250 for it with full armour. Loss bonus and kill reward: Valve’s source

Share this scenario

30 m · Kevlar + helmet · head3 hits to kill · 140 msBuy recommendedMP9
gamgem.com/counter-strike-2/weapons/mp9#30m-helmet-head

Sources & evidence

Damage · armour · range
weapons.vdata · 10f3693c · 2026-09-23
Price · kill reward
$1,250 · $600
Fire rate · magazine
857 RPM · 30/60
Range modifier · penetration
0.87 · 1
Description · buy-menu lines
csgo_english.txt
Loss bonus · armour prices
gamemode_competitive.cfg · items_game.txt
Valve’s files, read 2026-10-06:weapons.vdataitems_game.txtgamemode_competitive.cfg

All the maths runs in your browser, from Valve’s weapon file (10f3693c, 2026-09-23).