SRC TT33 SR-33 GBB: specs, joules & FPS
Complete specs SRC GBB (gas blowback)
SRC TT33 SR-33 GBB: 0.84 J, 300 FPS, 610 g, 12 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 | SRC |
|---|---|
| Model | TT33 SR-33 GBB |
| Category | Pistols |
| Power source | GBB (gas blowback) |
| Platform | TT |
| Weight | 610 g |
| Length | 220 mm |
| Magazine | 12 rounds |
| Hop-up | Adjustable |
Weighs 610 g: lighter than 91% of GBB replicas in the same category in the database (466 with weight).
At 0.84 J it is more powerful than 49% 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 |
|---|---|---|---|
| KSC Norinco Type 54 Early Clone Heavy Weight GBB | 0.84 J | 300 | 670 g |
| VFC SA 320 | 0.81 J | 295 | 675 g |
| G&G Piranha TR GBB | 0.84 J | 300 | 470 g |
| RWC Custom Glock 19 Gen 4 GBB Type 2 | 0.84 J | 300 | 610 g |
| G&G GTP 9 | 0.84 J | 300 | 770 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 | 300 | 91 |
| 0.25 g | 268 | 82 |
| 0.28 g | 254 | 77 |
| 0.30 g | 245 | 75 |
| 0.32 g | 237 | 72 |
| 0.36 g | 224 | 68 |
| 0.40 g | 212 | 65 |
Theoretical calculation at constant energy (0.84 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.
Available colours
The same model is also sold in these colours. The specs on this page refer to the first version; each colour links to its own page at the source.