HPA Adapter VMP-2 (M4 Magazines)

The AIRTAC VMP-2 to M4 HPA Adapter converts the VMP-2 platform to run high-pressure air while feeding from standard M4 AEG magazines. Designed as a compact evolution of the VMP-1 adapter, it integrates the gas router, valve system, and feed components into a modular plug-and-play unit that installs without requiring donor gas magazines.

Product Features:

• Compatible with VORSK VMP-2 platform
• Accepts standard M4 AEG magazines
• Modular plug-and-play HPA adapter design
• Injection-moulded polycarbonate adapter body
• Injection-moulded gas router system
• High-flow internal valve for efficient air delivery
• Printed feed lips for reliable BB feeding
• CNC valve collar reinforcement
• Standard US-style HPA fitting connection
• Adjustable rear shim for magazine fitment tuning
• Compatible with many M4 magazines (PTS EPM series recommended)
• Lightweight construction for improved handling
• Pressure-tested prior to shipping for reliability
• Typical field setups operate around 100–110 PSI depending on configuration
• Maximum recommended pressure: 150 PSI

The AIRTAC VMP-2 to M4 HPA Adapter provides a modular conversion system that allows the VMP-2 platform to operate using high-pressure air while feeding from widely available M4 AEG magazines. Designed as a shortened evolution of the original VMP-1 adapter, the unit is shaped to match the aesthetics and profile of the VMP-2 platform while maintaining reliable HPA performance.

The adapter features a fully integrated plug-and-play construction that combines an injection-moulded gas router, high-flow valve assembly, and printed feed lips into a single unit. This design removes the need to dismantle gas magazines or harvest internal components from donor magazines, simplifying installation and improving long-term reliability.

Constructed from a highly impact-resistant polycarbonate blend, the adapter maintains a lightweight profile while providing durability for regular field use. The internal high-flow valve system ensures efficient air delivery and consistent cycling across a wide pressure range, while the CNC-reinforced valve collar helps maintain a secure and stable seal.

The adapter connects to standard HPA systems using the supplied US-style fitting, the most common fitting standard across airsoft HPA equipment. Typical field setups operate around 100–110 PSI depending on platform configuration, though pressure should never exceed 150 PSI.

For installation, the paddle magazine latch on the VMP-2 must be removed to allow the M4 magwell adapter to sit flush against the receiver, while the side magazine release remains functional. This modification requires removing a single screw and can easily be reversed if required.

By combining modular construction, reliable airflow, and compatibility with widely available M4 AEG magazines, the AIRTAC VMP-2 HPA Adapter delivers increased magazine capacity, improved shot consistency, and simplified magazine management compared with traditional gas magazines.

Range Overview:

AirTac’s HPA Adapters range converts traditional gas-powered replicas to use high-pressure air magazine systems with seamless reliability. Designed for multiple replica platforms, each adapter features precision-moulded construction, a secure BB-retention system, and standardised US-thread fittings for broad compatibility. The range combines rugged strength with practical installation, giving players smoother reloads and extended playtime through improved air efficiency and modular flexibility.

• Injection-moulded polymer housings provide durability and consistent alignment
• Standard US-thread fittings ensure cross-system HPA compatibility
• Integrated BB-retention systems prevent feed loss during reloads
• Supplied with magwell inserts, screws and shim sets for precise fitment
• Available for multiple pistol and SMG platforms for modular loadouts
• Engineered for reliability, consistency and long-term performance

Brand Statement:

AirTac specialise in developing high-performance HPA conversion systems for airsoft enthusiasts seeking consistent, efficient, and adaptable performance. Their focus on precision engineering and robust construction ensures every product delivers dependable field use, intuitive function, and lasting value.