HPA Adapter MP7 to M4

The VFC/Umarex MP7 M4 HPA Adapter (Modular) is a lightweight, plug-and-play solution designed to convert VFC OEM MP7 platforms to HPA using M4 magazines. Built from durable materials and supplied fully assembled, it delivers increased capacity, improved efficiency, and consistent performance straight out of the box.

Product Features:

• Construction & Materials – Injection moulded polycarbonate magwell provides high impact resistance while maintaining a lightweight profile
• Precision & Performance – High flow valve and NBR gas router ensure consistent output, reliable feeding, and stable air seal
• Control & Handling – Compact magazine design improves weapon balance and handling compared to traditional gas magazines
• Tactical Adaptability – Compatible with a wide range of M4 magazines with adjustable rear shim for fitment tuning
• Included Accessories – Pre-installed valve, feed lips, gas router, and swappable rear shim included for immediate use

The VFC/Umarex MP7 M4 HPA Adapter (Modular) has been developed from the ground up to provide a compact, efficient, and high-performance HPA solution for VFC OEM MP7 platforms. By replacing traditional gas magazines with a shortened HPA adapter and M4 magazine system, it significantly reduces weight while increasing ammunition capacity and overall usability.

Constructed with an injection moulded polycarbonate magwell, the adapter offers excellent durability and resistance to impact while remaining lightweight. This results in improved handling and balance, particularly during extended gameplay sessions. The compact design enhances manoeuvrability while maintaining consistent feeding performance.

The adapter comes fully assembled and ready to use, with the valve, feed lips, and gas router pre-installed. No donor parts or assembly are required, allowing for immediate integration into compatible platforms. A high flow valve ensures consistent air delivery, supporting reliable cycling and shot-to-shot performance.

An NBR gas router, manufactured to VFC MP7 specification, provides a dependable air seal and allows compatibility with factory or aftermarket MP7 components. Feed lips are also compatible with standard VFC MP7 parts, supporting long-term serviceability and ease of maintenance.

Each adapter is individually tested in a VFC MP7 platform prior to dispatch to ensure correct function, consistent feeding, and reliable operation.

The M4 magazine interface supports a wide range of airsoft magazines, offering flexibility in loadout configuration. A swappable rear shim is included to fine-tune fitment across different magazine brands. Recommended magazine options include high-performance designs known for strong spring tension and reliable feeding.

Operating within a recommended range of 90 to 150 PSI, the adapter provides stable and consistent output across a variety of setups. The pre-installed US Foster fitting ensures compatibility with standard HPA systems, making integration simple and efficient.

Designed for players seeking improved capacity, reduced weight, and consistent HPA performance, this adapter delivers a practical and adaptable solution for MP7 platforms.

COMPATIBILITY

Compatible with VFC / Umarex MP7 (VFC OEM platforms only)
Compatible with most airsoft M4 magazines
Recommended magazine types include high tension, high capacity designs for optimal feeding performance
Adjustable fitment via included rear shim for broader magazine compatibility

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.

Safety Information:

Do not exceed 150 PSI when operating any airsoft HPA adapter Always use air regulated by a secondary regulator Check PSI output before connecting air to the adapter Do not connect directly to unregulated air sources, CO2 systems, or high-pressure tanks Do not use with incompatible high-pressure air lines or fittings Always ensure correct setup and operation before use