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

No change to the UMP-45’s numbers in Valve’s file since May 2024.

CS2 weapon · SMG · both sides UMP-45

Valve: “Good armor penetration for mid-range fights.” The misunderstood middle child of the SMG family, the UMP45's small magazine is the only drawback to an otherwise versatile close-quarters automatic.

5 m20 m30 m40 m60 m
Target & armour
Buy UMP-45 when…

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

Valve’s buy menu: “Consider in force buy rounds.”
Buy recommended$1,200
$4,100 buys it with Kevlar and a helmet and leaves $1,900.
Price
$1,200
game data
Kill reward
$600
game data
Damage
35
game data
Armour pen
65%
derived
Fire rate
667 RPM
derived
Ammo
25 / 75
game data
Reload lock
3.47 s
game data
Run speed
230
game data
Penetration
1.0
game data
Accurate range
10.56 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: 46 damage per hit → 3 hits to kill · TTK 180 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 – 14 m1 hit
  • 15 m – 45 m2 hits
  • 46 m – 60 m+3 hits
Kevlar
  • 0 m – 14 m1 hit
  • 15 m – 45 m2 hits
  • 46 m – 60 m+3 hits
Kevlar + helmet
  • 0 m – 26 m2 hits
  • 27 m – 43 m3 hits
  • 44 m – 57 m4 hits
  • 58 m – 60 m+5 hits
Against Kevlar + helmet: 3 changes between 0 and 60 m.

Damage over distance

  • Head · no armour
  • Head · helmet
  • Chest · Kevlar
  • Chest · no armour
Here: 46 damage per hit at 30 m.

1st shot spread

Sure to hit a 30 cm plate to10.56 m

At 30 m the first shot can land up to 43 cm from the crosshair — wider than this drawing.

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

Spray — the first 10 bullets

Phase
10 bullets · 0.81 s of fire at 667 RPM · 15 left in the magazine.Inside the first 10 — the part guides say to learn first.

A short, steady rise with a little drift, then it settles at the top — forgiving. source

Valve’s recoil inputs: kick 23 ± 1 · direction variance 40.Valve’s file holds these inputs, not the path the bullets take — so no path is drawn here.

Firing mode guidance

  • spray6+ shots · inside 5.3 mCommit and pull down
  • burst2–3 shots · 5.3–10.56 mStop, then reset between bursts
  • tap1 shot · past 10.56 mReset fully between shots
At 30 m: tap.rule · ours: tap past its standing accurate range (10.56 m), spray inside half of itSpread still varies shot to shot — a guide, not a guarantee.

What beats the UMP-45?

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

  • UMP-45 + Kevlar + helmet$2,200$1,900 left
  • UMP-45 + Kevlar$1,850$2,250 left
  • UMP-45 alone$1,200$2,900 left
  • MAC-10 + Kevlar + helmet$2,050$2,050 left
Kill reward $600 — 2 kills pay the gun back. Armour: Kevlar $650, with helmet $1,000 (Valve’s items_game.txt).

Counterplay tips

  • Fight it beyond 10.56 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 5.12 m.
  • It needs 7 chest hits at 15 m against armour — trade it rather than duel alone.
  • It moves at 230 u/s — expect it to reposition quickly.
  • Drop its holder first: they lose a $1,200 gun, and each kill it makes pays them $600.

No — 3 hits to a helmeted head at 30 m (46 each).

Buy now or save now?with $4,100

If you lose0 kills1 kill2 kills
+$1,400after winsbuy$3,300 nextbuy$3,900 nextbuy$4,500 next
+$1,900a half’s first lossbuy$3,800 nextbuy$4,400 nextbuy$5,000 next
+$2,400buy$4,300 nextbuy$4,900 nextbuy$5,500 next
+$2,900buy$4,800 nextbuy$5,400 nextbuy$6,000 next
+$3,400the capbuy$5,300 nextbuy$5,900 nextbuy$6,500 next
rule · ours: buy when a lost round still leaves $2,200 for it with full armour. Loss bonus and kill reward: Valve’s source

Share this scenario

30 m · Kevlar + helmet · head3 hits to kill · 180 msBuy recommendedUMP-45
gamgem.com/counter-strike-2/weapons/ump-45#30m-helmet-head

Sources & evidence

Damage · armour · range
weapons.vdata · 10f3693c · 2026-09-23
Price · kill reward
$1,200 · $600
Fire rate · magazine
667 RPM · 25/75
Range modifier · penetration
0.75 · 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).