M4A1-S

M4A1-S icon

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The **Mk 18 Close Quarters Battle Receiver (CQBR)** with a suppressor, vertical grip, and aftermarket stock, known in-game as the **M4A1-S**, is a suppressed Assault Rifle that uses the 5.56mm Ammunition and was added in the v0.6.0 "*Bridges of Sweatbath County*" update on September 7, 2018.

## Info

The M4A1-S is an extremely rare Assault Rifle that only spawns from Golden Air Drops, Hardstone Blocks, and Hardstone Boulders. It can also be more commonly found and obtained from Military Air Drops or Lieutenant promotions in the 50v50 Map.

It has the fourth-highest DPS out of any Assault Rifle and LMG in the game except for the M249, the PKP Pecheneg, and the M134. However, it is also more accurate than the M249 and PKP and faster when moving, and having a less lengthy reload.

## Strategies

### Using

* Use the M4A1-S with a moderate scope, such as the 4x, as it can shred players in close to moderate range very quickly because of its high DPS.
* In 50v50, this weapon is especially useful, as the bullets are almost invisible, and in a massive fighting jumble of players, you can easily pick off enemies.
* Pair this with a weapon with a Shotgun that has high DPS, such as the MP220 or the Saiga-12. Blast your opponent with your shotgun, and switch to your M4A1-S to finish them off.

### Countering

* Countering the M4A1-S is difficult, as it deals extremely high damage and is viable close to mid-range. Using Sniper Rifles at a long-range, or high DPS spray SMGs at a very close range will effectively dispose of the enemy or at least force them to switch guns.
* Try to use cover as much as you can, as the M4A1-S may be able to destroy it quickly, but its reload time paired with its small magazine size can easily open a hole for rushing.
* Be aware that if you see this weapon on the ground somewhere, the odds are good that someone is using it to bait people into a trap because of it's rarity and usefulness. Look around for areas other survivrs can hide before you rush towards it.
* Although the Groza-S is a weaker 7.62mm variant of it, this doesn't mean the gun will fail to compete. Due to it's similar stats you can use it, with enough skill, to kill off the M4A1-S user.

## Sounds

* Firing
* Reloading
* Swapping To

## Trivia

* The M4A1-S's re-skin is based on the Mk 18 Close-Quarters Battle Receiver, a shortened version of the M4A1.
* The weapon is probably known as the M4A1-S in-game due to Justin's days of CS:GO. Interestingly, the "M4A4" that appears in CS:GO is also based on the Mk 18 and not an actual M4. However, the *actual* M4A1-S appears in CS:GO, albeit without a vertical grip, and with an actual sight.
* Even though the caliber of the M4A1-S is smaller than its 7.62mm counterpart, the Groza-S, it deals more damage than it. This is because 7.62x39mm has less penetration and less energy than 5.56x45mm.
* When held, the M4A1-S used to look like a Mk 12 SPR or a longer M416.
* The M4A1-S was the second suppressed weapon added to the game, with the AWM-S being the first. However, unlike the AWM-S, the bullet trails are fainter, contributing greatly to the "suppressed" effect.
* It is the second weapon with a special bullet fade, where the CZ-3A1 followed suit in the community update.
* It used to have a reload speed of 4.1 seconds, which is as long as an LMG. This reload speed has been buffed to be 1 second shorter.
* The gun world image sprite for the M4A1-S looks similar to the CZ-3A1 image.
* In real life, the M4A1-S is based on the AR-15 family of assault rifles.
* The gun sprite appears to have a vertical grip, and the re-skin world image has what is possibly an attached laser or flashlight.
* For some reason, the stock of the M4A1-S has a slightly different border shade of black from the rest of the gun. The stock is #313131 whereas the rest is #2E2E2E.
* Oddly, although the Mk 18 CQBR and short-barreled HK416 featured ingame are very statistically similar in real life, the "M4A1-S" ingame has 3 extra damage, half the spread, and an extra 0.8 seconds of reload time compared to the "M416" ingame. It's incredible what difference a suppressor and a handgrip can make in this game.

## History

* v0.6.7
	+ Changed world sprite from  to
	+ Changed world tint from #C1AC7F to #FFFFFF
* Added v0.6.0

## Gallery

M4A1-S in the HUDM4A1-S on the groundFellow survivr holding an M4A1-S (old skin)M4A1-S in the HUDA Red Lieutenant with an M4A1-SThis survivr got his hands on an AWM-S and an M4A1-SM4A1 with the CZ-3A1 in the HUD.