GATE Pulsar H + PolarStar HopUp · Alignment Kit V2.1 · M4 AEG HPA

3D Printing Settings

• Approximate Printing Time: ~1 hour 30 minutes
• Recommended Material: PLA+
• Layer Height: 0.10 mm–0.15 mm
• Recommended Infill: 65%–80%

Manuals

Installation and adjustment manuals are available in the Manuals section of the website or on the project's Discord server.

Installation and Adjustment

1. Printing and Preparation

   • Print the parts with 65%–80% infill.
   • PLA+ or a material with equivalent strength is recommended.
   • Lightly sand the internal and contact surfaces until a clean fit is achieved.
   • Apply dry lubricant or wax to sliding surfaces if necessary.

2. Gearbox Assembly

   • Install the GATE Pulsar H engine in the V2 gearbox.
   • Insert the kit base and fit the M3 inserts into their designated mounting points.
   • Position the rear clip in alignment with the replica's rear pin or stock mounting point.
   • Install the PolarStar HopUp chamber with the inner barrel.
   • Fit the upper cap to secure the front section and keep the chamber centered.
   • Route the HPA line through the side clip to prevent friction and tight bends.

3. Final Securing

   • Secure the rear plate with an M5 screw and washer to increase rigidity.
   • Check that the nozzle enters the chamber centrally, without friction or lateral pressure.
   • Perform dry feeding tests before adjusting the engine settings and hop-up.

Lower Receiver Recommendations

A metal ICS lower receiver is recommended when maximum assembly rigidity is required.

If you prefer to print your own lower receiver, the following Gearbox V2 Lower — Universal Lower models are compatible:

• Version 3
• Version 4.2
• Version 4.3 MTW

You can find them HERE.