G&G GX45 MkV: specs, joules & FPS
Complete specs GBB (gas blowback) Version for the Italian market
G&G GX45 MkV, GBB: 1 J, 328 FPS, 930 g, 26 rounds. Full specs from the official source, with FPS for every BB weight.
Power
Exactly at Italy's 1 J limit
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 | G&G |
|---|---|
| Model | GX45 MkV |
| Manufacturer code | GAS-GPM-MKV-BBB-ECM |
| Category | Pistols |
| Power source | GBB (gas blowback) |
| Platform | 1911 |
| Weight | 930 g |
| Length | 220 mm |
| Inner barrel | 108 mm |
| Magazine | 26 rounds |
| Hop-up | n/a |
| EAN / UPC | n/a |
velocità massima dichiarata per l'Italia (under 328 FPS / 100 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 | 328 | 100 |
| 0.25 g | 293 | 89 |
| 0.28 g | 277 | 84 |
| 0.30 g | 268 | 82 |
| 0.32 g | 259 | 79 |
| 0.36 g | 244 | 75 |
| 0.40 g | 232 | 71 |
Theoretical calculation at constant energy (1 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 G&G product page ↗ guay2.com