Umarex GLOCK G34 Gen4 GBB: specs, joules & FPS
Partial data GBB (gas blowback)
Umarex GLOCK G34 Gen4 GBB: 1.01 J, 330 FPS, 23 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 by us from the declared velocity with 0.20 g BBs.
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
| Brand | Umarex |
|---|---|
| Model | GLOCK G34 Gen4 GBB |
| Manufacturer code | 2276373 |
| Category | Pistols |
| Power source | GBB (gas blowback) |
| Platform | Glock |
| Weight | n/a |
| Length | n/a |
| Inner barrel | n/a |
| Magazine | 23 rounds |
| Hop-up | Adjustable |
| EAN / UPC | n/a |
Velocità dichiarata "fino a".
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 | 330 | 101 |
| 0.25 g | 295 | 90 |
| 0.28 g | 279 | 85 |
| 0.30 g | 269 | 82 |
| 0.32 g | 261 | 80 |
| 0.36 g | 246 | 75 |
| 0.40 g | 233 | 71 |
Theoretical calculation at constant energy (1.01 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 Umarex product page ↗ umarexusa.com
Not declared by the manufacturer: Weight, Length, Inner barrel.