PolarStar Hop Up Thing (TDC Hop-Up Unit for V2 M4/M16)

Precision-machined hop-up unit built to tighten up fitment, consistency, and air seal on high-end V2 builds. The PolarStar Hop Up Thing is CNC machined in-house from 6061-T6 aluminum and uses a true TDC (Top Dead Center) slider arm to apply straight-down pressure for stable, repeatable hop.

• TDC slider adjustment for consistent, vertical hop pressure (3x4mm nub compatible)
• Modular fitment designed to tune snugness for both AEG and HPA V2 setups
• CNC 6061 aluminum construction with tight tolerances

Specs

• Compatibility: Standard V2 M4/M16 models (AEG & HPA)
• Material: 6061 aluminum (CNC machined)
• Adjustment: TDC slider system (3x4mm nub compatible)
• Color: Batch 01 – Medical Metal Gray
• Manufacturing: Made in the USA
• Custom KA Tech Laser Engraving on the left hand side 

What’s in the box

• Hop Up Thing unit
• 0.305" gearbox lip (standard for most AEGs)
• 3x4mm round nub
• ARO (Axel Retaining O-ring) tool
• 5x shimming O-rings
• Molded barrel clip