Demo MCSP

Client + serverVersion 1.0Updated October 13, 2026
On this page
  1. Items
  2. Colours
  3. Getting started
  4. Swapping calibre
  5. Attachments
    1. What each attachment does
  6. Handling
  7. Damage
  8. Troubleshooting

The Multi-Caliber Sniper Platform: a bolt-action sniper rifle that swaps between .308 Win and .338 Norma Mag by changing its barrel. It has its own magazines, a handguard, a stock, a suppressor and a muzzle brake, in four colours.

  • Two calibres, one rifle. Swap the barrel to turn a .308 into a .338 and back. The old barrel comes back to you.
  • .308 Win takes vanilla .308 rounds, as fast as the M14.
  • .338 Norma Mag does 220 damage per hit, against 150 for the strongest vanilla rifles. It one-shots an unarmoured torso out to about 1,280 m and kills through a plate carrier in two shots.
  • Detachable magazines for both calibres. Single rounds can be chambered directly.
  • Four attachment slots: optic, muzzle (suppressor or muzzle brake), handguard and stock.
  • Four colours: black, white, sand and green.

Items

Item What it is Size Weight
MCSP .308 The rifle with a .308 Win barrel 10x3 4.6 kg
MCSP .338 The rifle with a .338 Norma Mag barrel 10x3 4.8 kg
MCSP .308 Magazine 15 rounds of vanilla .308 Win 2x2 310 g
MCSP .338 Magazine 10 rounds of .338 Norma Mag 2x2 340 g
.338 Norma Mag Round Loose .338 rounds, stack of 20 1x2 28 g each
.338 Norma Mag - 20 Round Box Opens into 20 loose .338 rounds 1x2 560 g
.308 Barrel Converts an MCSP .338 to .308 1x5 1.1 kg
.338 Barrel Converts an MCSP .308 to .338 1x5 1.2 kg
MCSP Handguard Cuts recoil and sway 4x1 350 g
MCSP Stock Cuts sway a lot, and recoil 4x2 400 g
MCSP Suppressor Suppresses the shot 4x1 420 g
MCSP Muzzle Brake Halves recoil, slightly louder 1x1 180 g

The rifle is repaired with a Weapon Cleaning Kit. The handguard and stock are repaired with Epoxy Putty or a Blowtorch.

Colours

The rifle, barrels, handguard and stock come in four colours. The colour is in brackets after the name, for example MCSP .338 (Sand):

Colour Name in game
Black No suffix, for example MCSP .308
White (White)
Sand (Sand)
Green (Green)
  • Colours are cosmetic. Any colour of handguard or stock fits any colour of rifle.
  • The barrel sets the rifle's colour. Fitting a sand .338 barrel to a black .308 gives you a sand .338. See Swapping calibre.
  • Magazines, ammunition, the suppressor and the muzzle brake come in one colour.

Getting started

  1. Load rounds into a magazine for your rifle's calibre: vanilla .308 Win for the .308, .338 Norma Mag for the .338.
  2. Attach the magazine.
  3. Add attachments as you find them.

You can also chamber a single loose round directly. The rifle uses the CZ 550's bolt, reload and handling animations.

  • Each calibre only takes its own MCSP magazine. Vanilla CZ 550 magazines don't fit.
  • The .308 takes regular and tracer .308 Win rounds.

Swapping calibre

The MCSP has no barrel slot. You change calibre by combining the rifle with the other barrel:

Rifle + Barrel Gives you
MCSP .308 .338 Barrel MCSP .338, and the rifle's .308 Barrel back
MCSP .338 .308 Barrel MCSP .308, and the rifle's .338 Barrel back
  1. Strip the rifle first: take off the optic, magazine, handguard and stock. The action won't appear while any of them is fitted.
  2. Put the rifle or the barrel in your hands with the other in your inventory, and use Convert .308 to .338 (or Convert .338 to .308). It takes 2 seconds.
  3. The rifle changes calibre and keeps its condition. The barrel you took off drops on the ground in front of you.
  • The new rifle takes the colour of the barrel you fitted. The barrel you get back has the colour the rifle was. Swap barrels between rifles to mix colours.
  • A ruined rifle or barrel can't be converted.
  • Keep the spare barrel. It's the only way back to the other calibre.

Attachments

Slot Takes
Optic Vanilla rifle optics that fit the M4: ACOG (4x and 6x), Mk 4, Starlight, M68, T3N, reflex, holographic, BUIS, carry handle
Muzzle MCSP Suppressor or MCSP Muzzle Brake
Handguard MCSP Handguard
Stock MCSP Stock

Hunting scopes, PSO scopes and vanilla suppressors don't fit.

What each attachment does

Attachment Recoil Sway Other
MCSP Handguard 30% less 35% less
MCSP Stock 25% less 70% less
MCSP Suppressor 10% less 30% more Suppresses the shot, slightly tighter grouping
MCSP Muzzle Brake 50% less 10% more Slightly louder, tighter grouping

The effects stack. With a handguard, stock and muzzle brake the rifle kicks about a quarter as much as bare. With the suppressor instead of the brake, about half.

Handling

MCSP .308 MCSP .338
Action Bolt-action Bolt-action
Magazine 15 rounds 10 rounds
Muzzle velocity about 945 m/s about 950 m/s
Damage (health) 150, as vanilla .308 220
Weapon health 350 350
  • Zeroing without an optic: 100 to 800 m, in 100 m steps.
  • Jamming: with a magazine fitted the rifle doesn't jam. Fired with no magazine, from rounds loaded straight into the chamber, it jams about 1 shot in 17. Recoil-reducing attachments lower that.
  • .338 rounds penetrate better and ricochet less than vanilla rifle rounds.
  • The .338 has its own firing and suppressed sounds. The .308 sounds like the CZ 550.

Damage

How the .338 and .308 compare with vanilla rifles. Approximate, from the game's damage falloff.

Unarmoured torso (health damage per hit, 100 kills):

Rifle 0 m 300 m 500 m 800 m One-shot kill out to
MCSP .338 220 198 172 140 about 1,280 m
MCSP .308, M14 150 124 102 75 about 520 m
SV98 150 123 101 75 about 510 m
CZ 550 150 116 95 71 about 450 m
Mosin 148 109 90 66 about 390 m

Through a plate carrier (torso, vest in pristine condition):

Rifle Shots to kill at 0 / 300 / 500 m One-hit knockout out to
MCSP .338 2 / 2 / 2 about 960 m
MCSP .308, M14 3 / 3 / 4 about 295 m
SV98 3 / 3 / 4 about 375 m
CZ 550 3 / 3 / 4 about 230 m

A headshot from either calibre kills at any range.

Troubleshooting

Problem What to do
The convert action doesn't appear Take off the optic, magazine, handguard and stock. A ruined rifle or barrel can't be converted
A magazine won't attach It's for the other calibre. The .308 takes the MCSP .308 Magazine, the .338 the MCSP .338 Magazine
A vanilla CZ 550 magazine won't attach Only MCSP magazines fit
A scope won't attach It needs to be a rifle optic that fits the M4. Hunting and PSO scopes don't fit
A vanilla suppressor won't attach Only the MCSP Suppressor and Muzzle Brake fit
The suppressor won't attach The muzzle brake is fitted. Take it off first

← All mods