Specna Arms KPYK AK SA-PJ12 PRIME BLDC: specs, joules & FPS
Complete specs Specna Arms AEG (electric)
Specna Arms KPYK AK SA-PJ12 PRIME BLDC, AEG: 1.72 J, 430 FPS, 3,720 g, 175 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 | KPYK AK SA-PJ12 PRIME BLDC |
| Manufacturer code | SPE-01-048350 |
| Category | Assault rifles & carbines |
| Power source | AEG (electric) |
| Platform | AK |
| Weight | 3,720 g |
| Length | 730 mm |
| Inner barrel | 450 mm |
| Magazine | 175 rounds |
| Gearbox | V3 |
| Battery | 7,4 V LiPo · connector Deans (T-plug) |
motore BLDC; lunghezza indicata come 95 cm
Weighs 3,720 g: heavier than 87% of AEG replicas in the same category in the database (873 with weight).
Similar alternatives
Replicas of the same type and category that stay within the Italian 1 J limit.
| Replica | Energy | FPS | Weight |
|---|---|---|---|
| LCT ZKS-74UN AEG | 1 J | 328 | 3,500 g |
| Novritsch SSR77 A1 AEG | 1 J | 328 | 3,500 g |
| Novritsch SSR77 A2 AEG | 1 J | 328 | 3,400 g |
| Novritsch SSR74 AEG (Long) | 1 J | 328 | 3,360 g |
| Real Sword (RS) Type 56 | 0.81 J | 295 | 3,500 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 | 430 | 131 |
| 0.25 g | 385 | 117 |
| 0.28 g | 363 | 111 |
| 0.30 g | 351 | 107 |
| 0.32 g | 340 | 104 |
| 0.36 g | 321 | 98 |
| 0.40 g | 304 | 93 |
Theoretical calculation at constant energy (1.72 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.