Silverback SRS A1 Sport (20 inches) Pull Bolt Licensed by Desert Tech: specs, joules & FPS
Complete specs Silverback Spring
Silverback SRS A1 Sport (20 inches) Pull Bolt Licensed by Desert Tech, spring: 1.34 J, 380 FPS, 3,000 g, 30 rounds. Official specs.
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 | Silverback |
|---|---|
| Model | SRS A1 Sport (20 inches) Pull Bolt Licensed by Desert Tech |
| Category | DMR & sniper rifles |
| Power source | Spring |
| Platform | SRS |
| Weight | 3,000 g |
| Length | 785 mm |
| Magazine | 30 rounds |
| Hop-up | Adjustable |
Weighs 3,000 g: lighter than 58% of spring replicas in the same category in the database (60 with weight).
Similar alternatives
Replicas of the same type and category that stay within the Italian 1 J limit.
| Replica | Energy | FPS | Weight |
|---|---|---|---|
| RWA Lee Enfield No.4 | 0.73 J | 280 | 3,150 g |
| ASG Steyr SSG 69 P2 Spring Black | 0.9 J | 312 | 2,500 g |
| KTW Winchester M70 New Black Shadow Air Cocking Rifle | 0.84 J | 300 | 2,690 g |
| KTW Type 38 Infantry Classic Rifle (Arisaka M1905) | 0.68 J | 270 | 3,450 g |
| Tokyo Marui VSR-10 G-SPEC Sniper Rifle (Spring Power) | 0.7 J | 275 | 2,090 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 | 380 | 116 |
| 0.25 g | 340 | 104 |
| 0.28 g | 321 | 98 |
| 0.30 g | 310 | 95 |
| 0.32 g | 300 | 92 |
| 0.36 g | 283 | 86 |
| 0.40 g | 269 | 82 |
Theoretical calculation at constant energy (1.34 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.