Umarex USP CO2 6mm Version (Fixed Slide) (by WinGun): specs, joules & FPS
Complete specs Umarex CO2
Umarex USP CO2 6mm Version (Fixed Slide) (by WinGun): 1.27 J, 370 FPS, 990 g, 16 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 | USP CO2 6mm Version (Fixed Slide) (by WinGun) |
| Category | Pistols |
| Power source | CO2 |
| Platform | USP |
| Weight | 990 g |
| Length | 210 mm |
| Magazine | 16 rounds |
| Hop-up | Adjustable |
Weighs 990 g: heavier than 55% of CO2 replicas in the same category in the database (231 with weight).
Similar alternatives
Replicas of the same type and category that stay within the Italian 1 J limit.
| Replica | Energy | FPS | Weight |
|---|---|---|---|
| ASG Pit Viper CO2 black | 1 J | 328 | 1,125 g |
| RWA x ARES Korth Sky Marshal CO2 Revolver | 0.95 J | 320 | 1,090 g |
| Inokatsu Colt M1911 Military 100th Anniversary (CO2 version) - B Grade | 0.84 J | 300 | 950 g |
| ASG Dan Wesson 715, CO2, Silver, 2.5" | 1 J | 328 | 1,000 g |
| SRC Baba Yaga Hi Capa 5.1 CO2 GBB | 1 J | 328 | 1,000 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 | 370 | 113 |
| 0.25 g | 331 | 101 |
| 0.28 g | 313 | 95 |
| 0.30 g | 302 | 92 |
| 0.32 g | 293 | 89 |
| 0.36 g | 276 | 84 |
| 0.40 g | 262 | 80 |
Theoretical calculation at constant energy (1.27 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.