Evike.com are taking pre-orders for the G&P MK18 equipped with the PolarStar Jack HPA Engine. They are expecting this to be available this month... "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.

• Length: 770mm - 850mm, Adjustable
• Weight: 3360g
• Inner Barrel: 338mm
• 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
• 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"