Specna Arms SA-S03 CORE: specs, joules & FPS
Complete specs Specna Arms Spring
Specna Arms SA-S03 CORE, spring: 1.64 J, 420 FPS, 3,140 g, 20 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 | Specna Arms |
|---|---|
| Model | SA-S03 CORE |
| Manufacturer code | SPE-03-026058 |
| Category | Assault rifles & carbines |
| Power source | Spring |
| Weight | 3,140 g |
| Length | 1,180 mm |
| Inner barrel | 485 mm |
| Magazine | 20 rounds |
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Weighs 3,140 g: heavier than 52% of spring replicas in the same category in the database (54 with weight).
Similar alternatives
Replicas of the same type and category that stay within the Italian 1 J limit.
| Replica | Energy | FPS | Weight |
|---|---|---|---|
| KTW Lee Enfield No.4 Sniper Classic Rifle (Spring Power) | 0.84 J | 300 | 3,360 g |
| Tokyo Marui M40A5 | 0.84 J | 300 | 3,400 g |
| KTW Type 38 Carbine Sniper Classic Rifle (Spring Power) | 0.84 J | 300 | 2,750 g |
| Tokyo Marui L96 AWS | 0.63 J | 260 | 3,460 g |
| Tokyo Marui VSR-ONE | 0.84 J | 300 | 2,100 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 | 420 | 128 |
| 0.25 g | 376 | 115 |
| 0.28 g | 355 | 108 |
| 0.30 g | 343 | 105 |
| 0.32 g | 332 | 101 |
| 0.36 g | 313 | 95 |
| 0.40 g | 297 | 91 |
Theoretical calculation at constant energy (1.64 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 gunfire.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 ↗ gunfire.com
Spotted a wrong or missing value? Let us know.