G&P / Polarstar Full Metal M4 R3 HPA Powered Airsoft Rifle (Length: 17" Keymod Handguard)


G&P / Polarstar Full Metal M4 R3 HPA Powered Airsoft Rifle (Length: 17" Keymod Handguard)



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  • G&P billet style aluminum alloy upper and lower receivers
  • 17" keymod handguard with full length top rail accepts all popular keymod accessories and allows for integration of a wide variety of optics
  • Integrated Polarstar JACK HPA engine with custom built gearbox shell
  • Receiver integrated adjustable regulator allows for easy installation of a 13 cubic inch HPA tank
  • Custom designed stock and adapter fit over 14ci tanks with the same functionality of the traditional adjustable stock
  • Ambidextrous magazine release
  • Front and rear flip up sights
  • Eliminates the need for bulky regulators or easily tangled HPA lines

G&P, a leader in the AEG market and PolarStar, the leader in the HPA market have joined forces to bring a new type of HPA powered Airsoft gun to the market. The R3, the result of their collaboration, makes HPA easy to use. Gone are the massive external tanks and long, awkward hoses. The R3 offers a complete, all in one, integrated HPA solution. G&P and worked directly with Polarstar to develop the R3s gearbox shell, designing it for use with the Polarstar JACK HPA system. Inside the receiver of the gun sits the JACK unit, as well as the adjustable regulator. To supply air, only simply screws a 13ci tank into the rear of the receiver, adjusts the regulator, installs the stock and the gun is ready to use. Whether you are an HPA veteran or a new comer to the work of HPA Airsoft guns, the R3 provides all the performance of the Polarstar experience, paired with the convenience and aesthetics of a G&P AEG.

Manufacturer: G&P / Polarstar

FPS Range: 380-440

Color: Black


Length: 800mm - 880mm, Adjustable

Weight: 3360g

Inner Barrel: 449mm

Magazine Capacity: 130rd Golfball Textured Polymer Mid-Cap. Works with Tokyo Marui, Matrix, G&P and other compatible M4 / M16 Series Airsoft AEG Magazines

Muzzle Velocity: 380 FPS variable with PSI adjustments

Thread Direction: 14mm positive

Gearbox: Polarstar JACK HPA engine

Estimated Shots: 600-900 shots per tank (depending on settings)

Fire Modes: Full/Semi-Auto, Safety

Battery: 7.4v 380mAh, connected via JST plug

Hopup: Yes, Adjustable

Package Includes: Rifle, Vertical Grip, Stock, tank adapter

76230 (HPA-GP-JAK005)