Tokyo Marui SG-09R Biohazard RE:4 GBB (Limited Edition): specs, joules & FPS
Complete specs Tokyo Marui GBB (gas blowback)
Tokyo Marui SG-09R Biohazard RE:4 GBB (Limited Edition): 0.73 J, 280 FPS, 490 g, 25 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 | Tokyo Marui |
|---|---|
| Model | SG-09R Biohazard RE:4 GBB (Limited Edition) |
| Category | Pistols |
| Power source | GBB (gas blowback) |
| Platform | USP |
| Weight | 490 g |
| Length | 245 mm |
| Magazine | 25 rounds |
| Hop-up | Adjustable |
Weighs 490 g: lighter than 95% of GBB replicas in the same category in the database (466 with weight).
At 0.73 J it is more powerful than 14% 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 |
|---|---|---|---|
| G&G Piranha TR GBB | 0.84 J | 300 | 470 g |
| G&G Piranha MK1 GBB | 0.84 J | 300 | 450 g |
| G&G Piranha SL GBB | 0.84 J | 300 | 450 g |
| KSC Makarov PM Finish Cut Custom Heavyweight GBB (Japan System 7 Version) | 0.73 J | 280 | 510 g |
| KSC Makarov PM HW GBB (System 7) - Japan Version | 0.73 J | 280 | 510 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 | 280 | 85 |
| 0.25 g | 250 | 76 |
| 0.28 g | 237 | 72 |
| 0.30 g | 229 | 70 |
| 0.32 g | 221 | 67 |
| 0.36 g | 209 | 64 |
| 0.40 g | 198 | 60 |
Theoretical calculation at constant energy (0.73 J). Real-world values can differ slightly with hop-up and replica.
Video
Tokyo Marui SG-09R Biohazard RE:4 GBB Airsoft Pistol (Limited Edition) · eHobby Asia
Video from an independent channel, matched by the replica name: check it is the same version. It loads from YouTube only when you press the button.
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.