An integrally suppressed version of the G3 rifle for special forces. Features battle rifle damage characteristics with mild recoil, slow fire rate, and a smaller magazine than average.
–In-game description
MC51SD angled
Weapon Type Primary Weapon
Weapon Class Carbine
Rank Prerequisites Rank 86
Damage 46 → 25
Range 20 max → 150 min


Hip Accuracy


Sight Accuracy


Magazine Size 20, 21 with round in chamber
Ammo Reserve 120
Fire Modes Auto & Semi
Rate of Fire 540 RPM

TTK (Time to Kill) 0.11s
Head & Body Multiplier
per bullet/pellet
Max (20 studs) Min (150 studs)
(x1.4) Head 64.4 35
(x1.1) Torso 50.6 27.5
(x1) Arms and Legs 46 25
Red color signifies a fatal hit.
Suppressed Stats
Suppressor/Bullet Attachment Suppressed Damage Suppressed Range
ARS Suppressor 46 -> 22.5 20 max -> 135 min
R2 Suppressor 43.7 -> 23.75 19 max -> 142.5 min
PBS-1 Suppressor 43.7 -> 23.75 19 max -> 142.5 min
PBS-4 Suppressor 43.7 -> 23.75 19 max -> 142.5 min
Suppressor 41.4 -> 25 18 max -> 150 min
Armor Piercing 46 -> 20.83333 0 max -> 150 min
Hollow Point 38.33333 -> 30 20 max -> 150 min
Muzzle Velocity 1800 studs/s
Penetration Depth 1.0 studs
Suppression 0.4


Hipfire Camera Recovery Speed 18
Sight Camera Recovery Speed 19
Weapon Recovery Speed 15
Weapon Recoil Damping 0.9


Min Camera Kick (1.65, -0.46, -0.38)
Max Camera Kick (1.72, -0.08, 0.37)
Min Recoil Displacement (-0.23, 0.15, 5.92)
Max Recoil Displacement (0.22, 0.37, 10.64)
Min Recoil Rotation (0.15, 0.37, -0.23)
Max Recoil Rotation (0.30, -0.38, 0.22)
Hipfire Spread Factor 0.09
Hipfire Recovery Speed 8
Hipfire Spread Damping 0.90


Min Camera Kick (1.34, -0.31, -0.31)
Max Camera Kick (2.02, 0.52, 0.30)
Min Recoil Displacement (-0.08, 0.82, 6.14)
Weapon Shot Displacement (0.07, 1.04, 8.10)
Min Recoil Rotation (0.52, -0.16, -0.38)
Max Recoil Rotation (0.75, 0.15, 0.37)
Sight Magnification 2.1x


Reload Time 2.4 seconds
Empty Reload Time 3.1 seconds
Equip Speed 15
Aiming Speed 17
Crosshair Size 28
Crosshair Spread Rate 300
Crosshair Recover Rate 25


Weapon Walk Speed 14 stud/s
Aiming Walk Speed 9.7 stud/s
Ammo Type 7.62x51mm NATO
Round in Chamber One
Shot Suppression Range Active

List of Attachments

Optics Kills Required
C79 125 Kills
Comp Aimpoint 130 Kills
EOTech 552 85 Kills
EOTech XPS2 55 Kills
Kobra Sight 320 Kills
M145 185 Kills
PK-A 165 Kills
PKA-S 225 Kills
VCOG 6x Scope 455 Kills
Z-Point 10 Kills
TA33 ACOG 650 Kills
TA11 ACOG 1750 Kills
TA01 ACOG 2500 Kills

Underbarrel Kills Required
Angled Grip 115 Kills
Vertical Grip 45 Kills
Folding Grip 265 Kills
Stubby Grip 355 Kills
Laser 75 Kills

Barrel Kills Required
ARS Suppressor 150 Kills
Compensator 120 Kills
Muzzle Brake 175 Kills
R2 Suppressor 40 Kills
Flash Hider 100 Kills
PBS-4 Suppressor 245 Kills
PBS-1 Suppressor 205 Kills
Suppressor 30 Kills

Other Attachments Kills Required
Green Laser 110 Kills
Canted Delta Sight 405 Kills
Laser 20 Kills
Canted Iron Sights 310 Kills
Ballistics Tracker 1500 Kills
Hollow Point 2000 Kills
Armor Piercing 1000 Kills

The MC51SD is a British Integrally Suppressed Carbine variant of the G3. It is unlocked at rank 86, or it can be bought with credits.


The MC51SD (Machine Carbine 51 Schalldämpfer, English: Sound Dampen) is an integrally suppressed variant of the MC51 carbine - a British carbine variant of the German G3 rifle. As its name suggests, the MC51SD features an integral suppressor. The original MC51 was designed in the mid-1980s by the United Kingdom defense firm, FT Ordnance, in order to replace the Sterling L34 due to its inadequate range. Designed to be used by the United Kingdom Special Forces (UKSF), the weapon is chambered in 7.62x51mm NATO for more accurate shots and superior range over the 9x19mm Parabellum ammunition used by the L34; a common round for a submachine gun.

Unfortunately, the MC51 and its variants proved to be unreliable due to several problems, such as the noticeably higher recoil than the Sterling submachine gun due to the larger caliber chambered for the weapon. This meant that the MC51 was used for only a limited time by the British Special Air Service (SAS) and the Special Boat Service (SBS). Not long after the MC51 was brought into service, the MC51K (Kurz - short) variant was produced and featured a significantly shorter barrel. However, this variant had even more prominent recoil problems than the others.

The MC51 was replaced by the more reliable HK53 not long after it was introduced. The HK53 was chambered in 5.56x45mm NATO round, a significantly smaller round.


General Information

The MC51SD is a slow and steady carbine. With a firerate firmly parked between the AG-3 and the G3 (its unsuppressed platform members), it serves as a middleground in the G3 family. With high minimum damage and relatively tame recoil, the MC51SD serves as an interesting, stealthy alternative to its family.

Usage & Tactics

For anyone used to the SCAR-H without attachments, the MC51SD will be a familiar (albeit slower paced) experience. While the MC51SD has recoil, it is not particularly bad: it bounces directly up, so a sight with a relatively open lower housing (such as the OKP-7) makes targeting enemies during recoil much easier. Its hipfire performance is middling at best, but within about 30 studs, this weapon is a serious threat to anyone blindly charging its wielder.

Should the MC51SD ever land a headshot in close quarters distances, it will be enough to allow any follow-up shot from the weapon, anywhere on the body, to kill the target. Even a bodyshot deals at least 50 damage up close, making the MC51SD surprisingly lethal. Otherwise, it is a three-shot kill (3SK) weapon.

The MC51SD's very slow damage drop-off rate it pays off, by having one of the closest maximum effective ranges of all carbines, at 121 studs. Even at range, however, it still takes 4 shots from the MC51SD to get a kill, making it play much like an assault rifle.

Of note is the MC51SD's heavily dampened sound. When it is quiet, this weapon is almost as difficult to place as a MAC10 using the Sionics Suppressor. If there happens to be any gunfire, the MC51SD will quickly fade into the background, becoming almost unnoticeable. This makes the MC51SD an extremely good weapon for stealthy players who can pick their targets, but need to be able to have some crowd control options. Consider this weapon an excellent choice for flankers with the ability to fight a large majority of weapons one-on-one in close quarters.


The MC51SD is a well rounded carbine with a battle rifle cartridge. Despite the integral suppressor's detriments of lower velocity and limited effective range, the MC51SD is a force to be reckoned with. However, its slow fire rate and 20 round magazine means that any misses will be punished and exploited by weapons with larger magazine capacity and higher fire rates.

Pros & Cons


  • Integral suppressor.
  • High damage—two-shot body shot up close.
  • Fast reload times.
  • Unobtrusive iron sights.
  • Mild recoil, easily tempered by attachments.
  • Good handling characteristics.


  • Slow rate of fire.
  • Cannot equip barrel attachments.
  • Low maximum damage range.
  • Moderate visual recoil, made worse when using sights which obstruct the lower screen (as this will bounce up to the center with recoil)
  • Short damage drop-off range.
  • Side-to-side recoil cannot be easily countered.
  • Mediocre close-range TTK without torso or headshots.


  • In addition to the original MC51 and MC51SD, the other variants include the MC51K and MC51T, a tactical version with a retractable stock and a limiter to a three-round burst.
  • Imperial Defence Services Ltd. still markets the standard model of the MC51.
  • The MC51SD variant of the MC51 was only issued to the SBS.
  • The MC51SD is also extremely rare to come across, and as a result, is quite expensive in the collector's market.


Primary Weapons

Assault Rifles

AK12 - AN-94 - AS VAL - SCAR-L - AUG A1 - M16A4 - G36
M16A3 - AUG A2 - FAMAS G2 - AK47 - AUG A3 - L85A2
HK416 - AK74 - AKM - AK103 - TAR-21 - M231 - G11K2

Personal Defense Weapons

MP5K - UMP45 - G36C - MP7 - MAC10 - P90 - MP5
Colt SMG 635 - L2A3 - MP5SD - MP10 - MP5/10 - Uzi - M3A1
AUG A3 Para - PPSh-41 - FAL Para Shorty - Kriss Vector - MP40
X95 SMG - Tommy Gun

Light Machine Guns

Colt LMG - M60 - AUG HBAR - MG36 - RPK12 - L86 LSW - RPK

Sniper Rifles

Intervention - Remington 700 - Dragunov SVU - AWS - BFG 50
AWM - TRG-42 - Mosin Nagant - Dragunov SVDS - Hecate II
M107 - Steyr Scout - WA2000


M4A1 - G36K - M4 - L22 - SCAR PDW - AKU12 - Groza-1
AK12C - Honey Badger - SR-3M - Groza-4 - MC51SD
FAL 50.63 Para - 1858 Carbine - AK105 - Jury - KAC SRR

Designated Marksman Rifles

MK11 - SKS - SL-8 - VSS Vintorez - MSG90 - Beowulf TCR

Battle Rifles

Beowulf ECR - SCAR-H - AK12BR - G3 - AG-3 - Henry 45-70
FAL 50.00


KSG-12 - Remington 870 - DBV12 - KS-23M - Saiga-12
Stevens DB - AA-12 - SPAS-12

Secondary Weapons Pistols

M9 - G17 - M1911 - Desert Eagle L5 - M45A1 - Five Seven
ZIP 22 - Desert Eagle XIX

Machine Pistols

G18 - M93R - TEC-9 - Micro Uzi - MP1911


MP412 REX - Mateba 6 - 1858 New Army - Redhawk 44
Judge - Executioner


Serbu Shotgun - SFG 50 - Sawed Off - Saiga-12U - Obrez

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