Umarex Glock 17 Gen 5 V2 GBB (VFC G17 Gen 5): specs, joules & FPS
Complete specs Umarex GBB (gas blowback)
Umarex Glock 17 Gen 5 V2 GBB (VFC G17 Gen 5): 1.11 J, 345 FPS, 650 g, 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 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 | Umarex |
|---|---|
| Model | Glock 17 Gen 5 V2 GBB (VFC G17 Gen 5) |
| Category | Pistols |
| Power source | GBB (gas blowback) |
| Platform | G SERIES |
| Weight | 650 g |
| Length | 202 mm |
| Magazine | 23 rounds |
| Hop-up | Adjustable |
Weighs 650 g: lighter than 85% of GBB replicas in the same category in the database (466 with weight).
Similar alternatives
Replicas of the same type and category that stay within the Italian 1 J limit.
| Replica | Energy | FPS | Weight |
|---|---|---|---|
| Umarex Glock 19 Gen 3 Green Gas (VFC G19 Gen 3) | 0.84 J | 300 | 650 g |
| Umarex Glock 19 Gen 4 GBB (VFC G19 Gen 4) | 0.84 J | 300 | 650 g |
| RWC Custom Glock 19 Gen 4 GBB | 0.84 J | 300 | 640 g |
| Novritsch SSP18 Gas Blowback Pistol | 0.95 J | 320 | 735 g |
| RWA Agency Arms EXA GBB | 0.84 J | 300 | 670 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 | 345 | 105 |
| 0.25 g | 309 | 94 |
| 0.28 g | 292 | 89 |
| 0.30 g | 282 | 86 |
| 0.32 g | 273 | 83 |
| 0.36 g | 257 | 78 |
| 0.40 g | 244 | 74 |
Theoretical calculation at constant energy (1.11 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
Spotted a wrong or missing value? Let us know.