M4/416 AEG to HPA Conversion

We don't simply install an HPA engine. We design a complete system.

The PRIMOREGGIMENTO.COM HPA conversion service transforms an M4/416 AEG airsoft replica into a fully configured and optimised HPA system, integrating electronics, pneumatics and the hop-up assembly to achieve accuracy, shot-to-shot consistency and reliability.

Starting from €750.00 – replica not included.

Features and technical specifications

Reference configuration:

• GATE PULSAR D2 HPA engine
• GATE TITAN II Bluetooth® electronic control unit
• AirTac AR15 Universal CNC hop-up chamber
• CNC hop-up nub
• Maple Leaf 6.02 mm precision inner barrel
• Maple Leaf MR Hop 60° bucking
• HPA adapter for AEG stock

Included workshop operations:

• Technical assessment and compatibility checks
• Complete component installation
• Hop-up servicing and alignment optimisation
• Electronic calibration and programming
• Feeding timing and pneumatic cycle adjustment
• Operating pressure tuning according to the configuration and BB weight
• Power output: below 1 J
• Chronograph checks and functional testing

Final component selection depends on the platform. The listed parts represent our reference configuration, not a fixed kit.

The Primoreggimento Method

For years, we studied and tested different HPA systems, choosing to wait for technology that fully met our quality standards. The development of GATE PULSAR D2 and TITAN II Bluetooth® allowed us to create a conversion in which every component contributes to the overall result.

The GATE system provides advanced control over the firing cycle and trigger response, with customisable parameters through GATE Control Station.

Each conversion is tailored to the individual replica, taking manufacturing tolerances, mechanical configuration and customer requirements into account.

Important information

• The replica may be supplied by the customer or purchased new or second-hand through PRIMOREGGIMENTO.COM.
• Alternative HPA engines selected by the customer can also be used. The final configuration and price are agreed during the initial assessment and quotation process.
• The HPA tank, pressure regulator and external HPA line are not included unless otherwise specified.
• Any additional components or workshop operations are agreed and approved before work begins.

We have been studying and upgrading airsoft replicas since 1997. In 2004, with the establishment of PRIMOREGGIMENTO.COM, this experience became our workshop's everyday work.

The value of the conversion lies not only in the installed components, but in the expertise required to make them work correctly together.