KJ Works M9A1 Full Metal CO2 GBB (Threaded Barrel Version): specs, joules & FPS
Complete specs KJ Works CO2
KJ Works M9A1 Full Metal CO2 GBB (Threaded Barrel Version): 0.89 J, 310 FPS, 930 g, 25 rounds. Official specs.
Power
Within Italy's 1 J limit
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 | KJ Works |
|---|---|
| Model | M9A1 Full Metal CO2 GBB (Threaded Barrel Version) |
| Category | Pistols |
| Power source | CO2 |
| Platform | 92F M9 93R |
| Weight | 930 g |
| Length | 240 mm |
| Magazine | 25 rounds |
| Hop-up | Adjustable |
Weighs 930 g: lighter than 53% of CO2 replicas in the same category in the database (231 with weight).
At 0.89 J it is more powerful than 46% of CO2 replicas in the same category that stay within 1 J (85).
Similar alternatives
Same type and category, with similar power and weight.
| Replica | Energy | FPS | Weight |
|---|---|---|---|
| Inokatsu Colt M1911 Military 100th Anniversary (CO2 version) - B Grade | 0.84 J | 300 | 950 g |
| SRC M9A3 SR-92 A3 CO2 GBB | 1 J | 328 | 910 g |
| RWA x ARES Korth Sky Marshal CO2 Revolver | 0.95 J | 320 | 1,090 g |
| KSC M93R Auto 9C CO2 (Japan System Zero Version) | 0.84 J | 300 | 1,100 g |
| RWC SIG AIR P320 M17 GBB (Cerakote Sand Dance) Stippling Type A | 0.84 J | 300 | 760 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 | 310 | 94 |
| 0.25 g | 277 | 85 |
| 0.28 g | 262 | 80 |
| 0.30 g | 253 | 77 |
| 0.32 g | 245 | 75 |
| 0.36 g | 231 | 70 |
| 0.40 g | 219 | 67 |
Theoretical calculation at constant energy (0.89 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.