VFC HK33 GBB: specs, joules & FPS
Complete specs VFC GBB (gas blowback)
VFC HK33 GBB: 1.21 J, 361 FPS, 3,200 g, 30 rounds. Full specs from the official source, with FPS for every BB weight.
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.
Velocity declared in m/s by the source and converted to 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 | VFC |
|---|---|
| Model | HK33 GBB |
| Manufacturer code | VF2-LHK33-BK01 |
| Category | Assault rifles & carbines |
| Power source | GBB (gas blowback) |
| Platform | HK33 |
| Weight | 3,200 g |
| Length | 925 mm |
| Inner barrel | 360 mm |
| Magazine | 30 rounds |
licenza Umarex; velocità ± 5 m/s
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 | 361 | 110 |
| 0.25 g | 323 | 98 |
| 0.28 g | 305 | 93 |
| 0.30 g | 295 | 90 |
| 0.32 g | 285 | 87 |
| 0.36 g | 269 | 82 |
| 0.40 g | 255 | 78 |
Theoretical calculation at constant energy (1.21 J). Real-world values can differ slightly with hop-up and replica.
Data source
Every value on this page comes from the manufacturer's official product page, checked on 2026-11-07.
Official VFC product page ↗ vegaforce.com