ASG MK 23 Special Operations Gas Non Blow Back: specs, joules & FPS
Partial data ASG Gas NBB (non-blowback)
ASG MK 23 Special Operations Gas Non Blow Back, NBB: 0.72 J, 278.87 FPS, 28 rounds. Full specs from the official source, with FPS for every BB weight.
Power
Within Italy's 1 J limit
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 | ASG |
|---|---|
| Model | MK 23 Special Operations Gas Non Blow Back |
| Manufacturer code | 14763 |
| Category | Pistols |
| Power source | Gas NBB (non-blowback) |
| Platform | ASG generic |
| Weight | n/a |
| Length (collapsed / extended) | 245 / 427 mm |
| Inner barrel | 130 mm |
| Magazine | 28 rounds |
| Hop-up | Adjustable |
| EAN / UPC | 5707843002745 |
At 0.72 J it is more powerful than 12% of NBB replicas in the same category that stay within 1 J (178).
Similar alternatives
Same type and category, with similar power and weight.
| Replica | Energy | FPS | Weight |
|---|---|---|---|
| ASG Zastava R-357 Gas | 0.72 J | 279 | 1 g |
| Marushin Ruger Super Redhawk 7.5inch .454 Casull Gas Revolver - W Deep Black | 0.73 J | 280 | 890 g |
| Marushin Ruger Super Redhawk 9.5inch .454 Casull Gas Revolver - Matt Black | 0.73 J | 280 | 1,050 g |
| Tanaka Works Revolver S&W M29 4inch Counterbored Steel Finish Ver.3 (Gas Version) | 0.73 J | 280 | 450 g |
| Tanaka Works Revolver S&W M40 2 Inch Centennial (Gas Version) | 0.73 J | 280 | 3,830 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 | 278 | 85 |
| 0.25 g | 249 | 76 |
| 0.28 g | 235 | 72 |
| 0.30 g | 227 | 69 |
| 0.32 g | 220 | 67 |
| 0.36 g | 207 | 63 |
| 0.40 g | 197 | 60 |
Theoretical calculation at constant energy (0.72 J). Real-world values can differ slightly with hop-up and replica.
Data source
Every value on this page comes from the manufacturer's official product page, checked on 2026-11-07.
Official ASG product page ↗ actionsportgames.com
Not declared by the manufacturer: Weight.
Spotted a wrong or missing value? Let us know.