gate pulsar s vfc vegaforce oem alignment kit v2 1 m4

Version 2.1 of the hop-up alignment system, designed for M4 AEG HPA replicas using:

• GATE Pulsar-S engine (compact HPA engine with integrated electronic control, distinctive blue design, and high performance).
• VFC VegaForce OEM chamber (factory CNC hop-up chamber by VFC with robust construction and factory precision).

This kit ensures perfect centering between the Pulsar-S nozzle and the VegaForce OEM chamber, eliminating lateral play and improving feeding consistency in HPA configurations. Fully compatible with ICS split systems and standard V2 gearboxes.

Compatibility

Component	Compatibility
HPA Engine	GATE Pulsar-S
Hop-up Chamber	VFC VegaForce OEM
Base Replica	M4 AEG
Gearbox	V2 / ICS SPLIT

What the kit includes

• Rear clip for mounting via rear pin or fixed stock.
• Base with housing for M3 inserts (optional brass for maximum durability).
• Side clip specifically designed for routing the Pulsar-S HPA tube/line.
• Front locking top cap adapted to the VegaForce OEM chamber geometry.
• Rear plate with mounting point for an M5 screw (additional reinforcement).

Installation and adjustment

1. Printing and preparation

   • Print the parts with 65–80% infill.
   • Lightly sand internal areas and contact surfaces for a precise fit.
   • Apply dry lubricant or wax on sliding surfaces to make installation and maintenance easier.

2. Installation in the replica

   • Insert the base into the lower and secure the M3 inserts.
   • Install the rear clip aligned with the rear pin or the stock anchor point.
   • Install the VegaForce OEM chamber with the inner barrel; the top cap locks the assembly while keeping everything centered.
   • Route the GATE Pulsar-S HPA line through the side clip, taking advantage of its compact design.

3. Final fixation

   • Secure the rear plate using an M5 screw and washer for maximum rigidity.
   • Verify that the Pulsar-S nozzle enters centered into the VegaForce chamber without lateral play.
   • Perform dry feeding tests and adjust the Pulsar-S pressure according to your setup (typical range: 80–120 PSI).

Required components (not included)

• 4× M3 × 4.2 mm inserts
• 4× M3 × 8 SHCS screws

Lower receiver recommendations

It is recommended to use the ICS metal lower receiver for maximum rigidity.
If you prefer to print the lower part, the following Gearbox V2 Lower “Universal Lower Part” models are compatible:

• Version 3
• Version 4.2
• Version 4.3 MTW

You can find them HERE.

3D printing parameters

• Approximate print time: ~1 h 30 min
• Recommended material: PLA+
• Layer height: 0.10 mm – 0.15 mm

Manuals

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