Systema PTW Challenge Kit M4-A1-MAX (M150 Cylinder) - Ambidextrous Version: specs, joules & FPS
Partial data Systema AEG (electric)
Systema PTW Challenge Kit M4-A1-MAX (M150 Cylinder) - Ambidextrous Version, AEG: 1.88 J, 450 FPS, 3,000 g. Official specs.
Power
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
| Brand | Systema |
|---|---|
| Model | PTW Challenge Kit M4-A1-MAX (M150 Cylinder) - Ambidextrous Version |
| Category | Assault rifles & carbines |
| Power source | AEG (electric) |
| Platform | AR/M4 SERIES |
| Weight | 3,000 g |
| Length | n/a |
| Magazine | n/a |
Weighs 3,000 g: heavier than 58% 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.
| Replica | Energy | FPS | Weight |
|---|---|---|---|
| KWA Full Metal KM4 KR5 AEG w/ 5 inch Keymod Handguard | 0.95 J | 320 | 3,040 g |
| Novritsch SSR63 A1 AEG | 1 J | 328 | 2,770 g |
| Novritsch SSR63 A2 AEG | 1 J | 328 | 2,760 g |
| ASG B&T Licensed APC556 AEG (Black) (by ASG & Double Eagle) | 0.96 J | 321 | 2,880 g |
| Classic Army Nemesis LS12 M4 Carbine AEG | 0.95 J | 320 | 2,830 g |
Velocity with different BB weights
At the same energy, heavier BBs leave the barrel slower. Expected velocity with the most common weights:
| BB weight | FPS | m/s |
|---|---|---|
| 0.20 g | 450 | 137 |
| 0.25 g | 402 | 123 |
| 0.28 g | 380 | 116 |
| 0.30 g | 367 | 112 |
| 0.32 g | 356 | 108 |
| 0.36 g | 335 | 102 |
| 0.40 g | 318 | 97 |
Theoretical calculation at constant energy (1.88 J). Real-world values can differ slightly with hop-up and replica.
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: Length, Magazine.
Spotted a wrong or missing value? Let us know.