Army Armament R28 1911 Green Gas: specs, joules & FPS
Complete specs Army Armament GBB (gas blowback)
Army Armament R28 1911 Green Gas, GBB: 0.73 J, 280 FPS, 960 g, 26 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 | Army Armament |
|---|---|
| Model | R28 1911 Green Gas |
| Category | Pistols |
| Power source | GBB (gas blowback) |
| Platform | 1911 |
| Weight | 960 g |
| Length | 250 mm |
| Magazine | 26 rounds |
| Hop-up | Adjustable |
Weighs 960 g: heavier than 73% of GBB replicas in the same category in the database (466 with weight).
At 0.73 J it is more powerful than 14% 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 |
|---|---|---|---|
| Army Armament x SP System Kimber 1911 GBB | 0.73 J | 280 | 970 g |
| Army Armament R29 MK IV Cold Cup National Match Green Gas | 0.73 J | 280 | 940 g |
| Army Armament R30 Government Style M1911A1 Competition Green Gas | 0.73 J | 280 | 930 g |
| Army Armament R30 1911 Wilson Combat Green Gas | 0.73 J | 280 | 1,000 g |
| Army Armament R30 M1911A1 V12 Custom GBB | 0.73 J | 280 | 1,000 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 | 280 | 85 |
| 0.25 g | 250 | 76 |
| 0.28 g | 237 | 72 |
| 0.30 g | 229 | 70 |
| 0.32 g | 221 | 67 |
| 0.36 g | 209 | 64 |
| 0.40 g | 198 | 60 |
Theoretical calculation at constant energy (0.73 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.