KJ Works P226 KP-01 GBB: specs, joules & FPS
Complete specs KJ Works GBB (gas blowback)
KJ Works P226 KP-01 GBB: 0.75 J, 285 FPS, 1,100 g, 24 rounds. Full specs from the official source, with FPS for every BB weight.
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 | P226 KP-01 GBB |
| Category | Pistols |
| Power source | GBB (gas blowback) |
| Platform | 223 226 228 229 |
| Weight | 1,100 g |
| Length | 194 mm |
| Magazine | 24 rounds |
| Hop-up | Adjustable |
Weighs 1,100 g: heavier than 93% of GBB replicas in the same category in the database (466 with weight).
At 0.75 J it is more powerful than 33% of GBB replicas in the same category that stay within 1 J (351).
Similar alternatives
Same type and category, with similar power and weight.
| Replica | Energy | FPS | Weight |
|---|---|---|---|
| Marushin Unlimited Revolver Maxi (8mm, Black Heavy Weight ) | 0.63 J | 260 | 1,050 g |
| KSC P226R Standard Heavy Weight GBB (Japan System 7 Version) | 0.73 J | 280 | 930 g |
| Novritsch SSP5 4.3″ GBB | 0.84 J | 300 | 981 g |
| Tanaka Works SIG P220 HW Japan Ground Self Defense Force Green Gas | 0.73 J | 280 | 910 g |
| Tanaka Works SIG P220 HW Japan Maritime Self Defense Force Green Gas | 0.73 J | 280 | 910 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 | 285 | 87 |
| 0.25 g | 255 | 78 |
| 0.28 g | 241 | 73 |
| 0.30 g | 233 | 71 |
| 0.32 g | 225 | 69 |
| 0.36 g | 212 | 65 |
| 0.40 g | 202 | 61 |
Theoretical calculation at constant energy (0.75 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.