ARES Octarms X Amoeba M4-KM13 Assault Rifle: specs, joules & FPS

Partial data ARES AEG (electric)

ARES Octarms X Amoeba M4-KM13 Assault Rifle, AEG: 1.56 J, 410 FPS, 2,620 g, 300 rounds. Full specs from the official source, with FPS for every BB weight.

Power

Energy · estimated1.56 J
Velocity (FPS)410
Velocity (m/s)n/a

Above Italy's 1 J limit

Italian shops sell versions tuned below 1 J: ask the shop which version they ship.

Estimated energy: the source does not give the BB weight, so we used 0.20 g, the standard weight manufacturers and shops use to measure velocity. With other BBs the value changes: always check with a chronograph.

For information only, based on the energy the manufacturer declares for this version. Not legal advice: always check current local law and the version the shop sells.

Technical specifications

BrandARES
ModelOctarms X Amoeba M4-KM13 Assault Rifle
Manufacturer coden/a
CategoryAssault rifles & carbines
Power sourceAEG (electric)
PlatformAR/M4 SERIES
Weight2,620 g
Length848 mm
Inner barreln/a
Magazine300 rounds
Gearboxn/a
Hop-upAdjustable
Battery / connectorSmall Tamiya
EAN / UPCn/a

Velocity with different BB weights

At the same energy, heavier BBs leave the barrel slower. Expected velocity with the most common weights:

BB weightFPSm/s
0.20 g410125
0.25 g367112
0.28 g347106
0.30 g335102
0.32 g32499
0.36 g30693
0.40 g29088

Theoretical calculation at constant energy (1.56 J). Real-world values can differ slightly with hop-up and replica.

Try other values in the joule ↔ FPS converter →

Data source

The values on this page come from the product page of the shop redwolfairsoft.com, checked on 2026-11-07. The manufacturer does not publish full specs: values may refer to the version that shop sells.

Shop product page ↗ redwolfairsoft.com

Not declared by the manufacturer: Inner barrel.

Available colours

The same model is also sold in these colours. The specs on this page refer to the first version; each colour links to its own page at the source.

BKDE

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