King Arms Thompson M1928 Chicago AEG: specs, joules & FPS

Complete specs King Arms AEG (electric)

King Arms Thompson M1928 Chicago AEG: 1.2 J, 360 FPS, 3,900 g, 450 rounds. Full specs from the official source, with FPS for every BB weight.

Power

Energy · computed1.2 J
Velocity360 FPS110 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

BrandKing Arms
ModelThompson M1928 Chicago AEG
CategoryAssault rifles & carbines
Power sourceAEG (electric)
Weight3,900 g
Length870 mm
Magazine450 rounds
Hop-upAdjustable

Weighs 3,900 g: heavier than 92% 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
G&G FS2000 Tactical1 J3283,672 g
LCT ZKS-74UN AEG1 J3283,500 g
Novritsch SSR77 A1 AEG1 J3283,500 g
Novritsch SSR77 A2 AEG1 J3283,400 g
Novritsch SSR74 AEG (Long)1 J3283,360 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 g360110
0.25 g32298
0.28 g30493
0.30 g29490
0.32 g28587
0.36 g26882
0.40 g25578

Theoretical calculation at constant energy (1.2 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

Spotted a wrong or missing value? Let us know.

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