HK21-Mutation

Machine gunPermanentAdded Aug 2026

Developed by Heckler & Koch, the HK21 is a German 7.62mm machine gun based on the G3 rifle. This version has been optimized for use against Mutations.

Open compare HK21 on the Wiki

Head 159.9 kills in one

Chest 36.9 3 to kill

Fire rate 750 rounds a minute

Time to kill 160 ms chest shots, 100 HP

Magazine 100 100 spare

How to get it

None of our sources says how this weapon is obtained.

Checked against 3 sources

Z8Games’ weapon list Not sold; no source given
The game’s item table Not in it (the table stops at 2013)
CrossFire Wiki No page of its own

Damage by hit box

0100+

Where	Multiplier	Damage	Shots to kill	Time to kill
Head Centre of the head	×1.3	159.9	1	0 ms
Head (edge) Outer head hit box	×1.2	147.6	1	0 ms
Neck	×0.3	36.9	3	160 ms
Chest Collarbones and upper spine	×0.3	36.9	3	160 ms
Stomach Lower spine and pelvis	×0.36	44.3	3	160 ms
Arms	×0.3	36.9	3	160 ms
Hands	×0.3	36.9	3	160 ms
Thighs	×0.21	25.8	4	240 ms
Lower legs	×0.21	25.8	4	240 ms
Feet	×0.21	25.8	4	240 ms

Base damage 123, multiplied by each hit box’s ratio from the weapon’s own table. Time to kill counts the gaps between shots at 750 RPM. Each hit can vary by ±0%.

Handling

Fire modeFull auto
Fire rate750 RPM
Magazine100 + 100
Range400
Damage falloff0.0021
Movement speed−21.0%
Reload animation×1
Draw animation×1
Chest damage a second461
Damage in one magazine3,690
Knockback0.25

Through armour and walls

Through a helmet83% of damage
Through body armour83% of damage
Shoots through wallsYes
Shoots through playersYes

Damage kept through

Paper100%
Pottery60%
Cushion50%
Wood40%
Tyres33%

Against other machine guns

Head damage Better than 88%
Chest damage Better than 88%
Fire rate Better than 70%
Time to kill (chest) Better than 85%
Damage per second Better than 84%
Magazine Better than 19%
Range Better than 50%
Damage falloff Better than 42%
Movement penalty Better than 76%

Ranked among machine guns with game data. Lower is better for time to kill, falloff and movement penalty.

Spread and recoil

Raw values from the weapon table

	Standing	Crouching	Running	Walking	Jumping
First-shot spread	0.005	0.0055	0.012	0.0066	0.014
Maximum spread	0.14	0.14	0.16	0.135	0.18
Vertical kick	-0.068	-0.0675	-0.095	-0.0711	-0.13
Horizontal kick	-0.034	-0.0337	-0.0604	-0.0339	-0.072

Five movement states, in the order the game stores them; the labels are our reading of the values. Smaller spread is more accurate.

Other versions in the game files

The game keeps separate copies of some weapons for particular modes (zombie and mutation modes often get bigger magazines). These are the copies that differ from the one above.