CYMA CM.028S: specs, joules & FPS

Partial data CYMA AEG (electric)

CYMA CM.028S, AEG: 1.34 J, 380 FPS, 2,800 g. Full specs from the official source, with FPS for every BB weight.

Power

Energy · computed1.34 J
Velocity380 FPS116 m/s

Above Italy's 1 J limit

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

Energy computed from the velocity with 0.20 g BBs, the standard weight manufacturers and shops use to measure FPS.

For information only, based on the source's data for this version. Not legal advice: always check current local law and the version the shop sells.

Technical specifications

BrandCYMA
ModelCM.028S
Manufacturer codeCM.028S
CategoryAssault rifles & carbines
Power sourceAEG (electric)
PlatformAK
Weight2,800 g
Length890 mm
Inner barrel455 mm
Magazinen/a
GearboxV3

Weighs 2,800 g: lighter than 57% of AEG replicas in the same category in the database (873 with weight).

Similar alternatives

Replicas of the same type and category that stay within the Italian 1 J limit.

ReplicaEnergyFPSWeight
Novritsch SSR63 A1 AEG1 J3282,770 g
Novritsch SSR63 A2 AEG1 J3282,760 g
Novritsch SSR4 Mk2 AEG1 J3282,380 g
Novritsch SSR4 Mk1 Gen2 AEG1 J3282,300 g
Tokyo Marui Next Gen AK1020.84 J3002,900 g

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 g380116
0.25 g340104
0.28 g32198
0.30 g31095
0.32 g30092
0.36 g28386
0.40 g26982

Theoretical calculation at constant energy (1.34 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 gunfire.com, checked on 2026-11-08. The manufacturer does not publish full specs: values may refer to the version that shop sells.

Shop product page ↗ gunfire.com

Not declared by the manufacturer: Magazine.

Spotted a wrong or missing value? Let us know.

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