AirTac HPA Adapter for VORSK VMP-1 — M4 Magazine Version
AirTac HPA Adapter for VORSK VMP-1 — M4 Magazine Version
Out of stock
Notify Me About This Product
Couldn't load pickup availability
DETAILS
DETAILS
- description
The VORSK VMP-1 is one of the most capable compact SMG GBBs available — a platform that benefits enormously from HPA conversion because gas SMGs are particularly susceptible to cool-gas FPS drop during sustained automatic fire. Every burst dumps a significant volume of gas from the magazine; as the temperature drops, output pressure falls and FPS drops noticeably. On HPA, that problem doesn't exist. Output pressure is constant on every shot, every burst, every magazine. The VMP-1's cyclic rate stays consistent throughout extended play in a way gas simply cannot match.
AirTac's modular plug-and-play architecture integrates the gas router, high-flow valve assembly, printed feed lips, and CNC valve collar into a single unit — you don't need a donor gas magazine to harvest parts from. The CNC valve collar is a specific construction detail that matters: where many adapters use threaded polymer valve housings that can loosen or deform over time under the repeated pressure cycling of sustained fire, the CNC-machined collar maintains precise tolerance around the valve for the life of the adapter. The high-flow valve is designed to support the VMP-1's higher-than-pistol gas demand during automatic cycling. A CNC machined mag release and feed tube complete the assembly.
The adapter runs reliably from approximately 80psi and is typically field-set around 100psi depending on BB weight and target energy. At 100psi with 0.25g BBs the adapter reaches approximately 1J — adjust up for heavier BBs or higher joule targets within your site limits, always checking chrono after any pressure adjustment.
VMP-1 M4 vs VMP-1 MP5 — which should you choose?
| Feature | VMP-1 M4 (this) | VMP-1 MP5 |
|---|---|---|
| Magazine format | M4 AEG magazines | MP5 AEG magazines |
| Capacity | Higher (M4 mags up to 120R+) | Compact profile option |
| Price | £129.95 | £114.95 |
| Best for | Higher capacity; loadout already uses M4 mags | Compact profile; loadout already uses MP5 mags |
What you need to run this adapter
| Item | Notes |
|---|---|
| HPA tank | Any paintball/airsoft HPA tank |
| Secondary regulator | AirTac AT200 or equivalent — always required |
| HPA line | US Foster fitting line |
| M4 AEG magazine | PTS EPM/EPM1 recommended; strong spring for reliable feeding |
Specifications
| Specification | Detail |
|---|---|
| Compatible platform | VORSK VMP-1 |
| Architecture | Plug-and-play — no donor magazine parts required |
| Internal components | Injection-moulded gas router, high-flow valve, printed feed lips, CNC valve collar |
| Mag release and feed tube | CNC machined |
| Minimum cycling pressure | ~80psi |
| Typical field pressure | ~100psi (configuration and BB weight dependent) |
| Performance reference | ~1J at 100psi with 0.25g BBs |
| HPA fitting | US Foster (standard); EU push fitting available separately |
| Magazine compatibility | Standard M4 AEG magazines; PTS EPM/EPM1 recommended |
| Warranty | Lifetime warranty (AirTac) |
Package Contents
| Item | Qty |
|---|---|
| AirTac VMP-1 to M4 HPA Adapter (fully assembled) | 1 |
Usage Tips
Set your secondary regulator to approximately 100psi for a typical UK field setup. Check your chrono with your chosen BB weight before play — heavier BBs (0.28g, 0.30g) will reduce joule output at the same pressure, allowing you to run higher pressure for increased consistency while staying within site limits. Always rack the VMP-1 before inserting the adapter to ensure the nozzle is forward. The adapter is designed to cycle reliably from 80psi, meaning if your regulator reads 100psi on the gauge, you have a good margin above the minimum cycling pressure for consistent performance. Pin installation should come from the right side of the adapter when holding it as if it were in the gun.