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U-100 MK5

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U100 MK5
The U100 MK5 in real life.
The U-100 MK5 is a Singapore-made 5.56mm light machine gun, developed by the Chartered Industries of Singapore (CIS, now ST Kinetics). The MK 5 variant is an updated variant of the MK 4, which was developed for the USMC's Infantry Automatic Rifle competition; the Ultimax lost to the HK M27.

Battlefield 4Edit

U-100 MK5
Bf4 ultimax

25 - 18

Ammunition capacity

45 + 1


5.56x45mm NATO

Starting ammunition

184 + 46 rounds (MP)

Maximum ammunition

138 + 46 rounds (SP)

Rate of fire

590 RPM


LMG Range

Fire mode

• Automatic
• Burst fire
• Semi-automatic



Inventory slot


The U-100 MK5 is a light machine gun featured in Battlefield 4.


It can be found as a collectible in South China Sea in the southeastern-most hallway underneath the second half of the split Titan. It is equipped with a Prisma and a Bipod. It sports an Atomic Naval finish.


The U-100 MK5 appears in the Battlefield 4 multiplayer as the first LMG for the Support class. Its initial attachments are an HD-33 sight, magnifier, muzzle brake, and bipod. It has a low rate of fire, moderate damage, and very good stability.

The stubby or potato grips further increase accuracy in full-auto, while the ergo and vertical grips help with mobility. Using a angled or folding grip completely cancels out the first-shot multiplier on the U-100 MK5, enabling accurate tap-fire and tight shot grouping in short bursts. Due to it's magazine-feeding nature it may be also used more flexibly, as reloading is short and because it has semi- and burst-mode.

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