PolarStar F2 HPA Engine for Airsoft Rifles – V2 / M4 M16 EMG Edition
Ultimate HPA Precision Meets EMG Engineering

Take your airsoft rifle to the next level with the PolarStar F2 HPA Engine – V2 / M4 M16 EMG Edition. Designed for advanced players who demand consistent performance, unbeatable efficiency, and unrivaled tuning flexibility, this drop-in HPA engine is the elite upgrade for serious builds. Whether you're optimizing for CQB speed or stretching out into DMR territory, the F2 delivers on all fronts.

Compact Powerhouse, Engineered for Performance

At the core of the F2 lies its ultra-compact and lightweight design, enabling seamless installation into standard V2 gearboxes used in M4, M16, and similar platforms. Despite its small footprint, the F2 packs the full power of PolarStar’s Fusion Engine, offering elite-level performance in a cylinder-sized package.

The EMG edition of this HPA engine ensures top-tier compatibility and integration, making it ideal for EMG rifles and other V2-compatible platforms. Built from CNC-machined aluminum alloy, it's made in the USA with aerospace-grade precision and durability you can count on.

Dual Solenoid System: Complete Control

What sets the F2 apart is its patented dual solenoid design. This system separates control of the poppet and nozzle, enabling independent tuning of both air volume and loading time. That means you can fine-tune your setup for open bolt or true closed bolt operation—a massive advantage for both realism and consistency.

Want razor-sharp trigger response and enhanced realism? Toggle firing modes from AEG-style to closed bolt on the fly using the F2’s Firing Control Unit (FCU) with integrated LCD display. You’ll enjoy total control over dwell time, ROF, and timing parameters in a user-friendly interface.

Efficiency Without Compromise

Efficiency isn’t sacrificed for performance. The F2’s redesigned one-piece poppet valve minimizes air consumption without compromising shot power. Combined with the spring-loaded forward-biased nozzle, you get reliable BB seating with every shot—regardless of PSI level.

The result? A system that runs from as low as 45 PSI up to 145 PSI, producing FPS ranges from 205 to 500. This makes the F2 ideal for all airsoft applications, from indoor CQB matches to long-range outdoor DMR configurations—without the need to swap nozzles.

Tech Specs at a Glance

• Model: PolarStar F2 – V2 / M4 M16 EMG Edition

• Operating Pressure: 45–145 PSI

• Velocity Range: 205–500 FPS (depending on pressure and barrel setup)

• Material: CNC Aluminum Alloy

• Length: 4 inches

• Compatibility: Most Version 2 gearboxes (EMG, M4, M16, etc.)

• System: HPA – Dual Solenoid

• FCU: Included, with LCD display

• Fire Modes: Semi, Full Auto, Safety (open/closed bolt switchable)

Trusted by Pros

PolarStar is a name trusted by competition shooters, techs, and MILSIM veterans around the globe. Designed, manufactured, and tested in the USA, every F2 unit reflects top-tier engineering backed by decades of precision machining and HPA innovation.

Through its collaboration with EMG (Evike Manufacturing Group), this special edition of the F2 ensures maximum performance for airsoft training weapons, putting professional-level power and reliability into your hands.

The F2 Advantage

• Drop-in ready for most M4/M16 V2 platforms

• Tightly tuned performance with intuitive FCU adjustments

• Unmatched consistency and air efficiency

• Compact, lightweight, yet extremely durable

• CQB to DMR-capable with one nozzle

Upgrade your rifle with the PolarStar F2 EMG Edition and experience elite HPA performance in every shot. Precision. Power. PolarStar.