PolarStar Hop Up Thing

Bet you can’t guess what this Thing is for. It’s a hop up, or a paperweight, or maybe a very expensive fidget spinner, but we’re pretty sure it’s a hop up. Actually, it's a 6061 T6 Aircraft Aluminum hop up. We know, "Aircraft Grade" is the favorite buzzword of every airsoft company trying to make a $15 part sound like it belongs on a SpaceX rocket. But we actually machine these Things in-house at PolarStar to +/- 0.002" tolerances because we’re tired of seeing high-end builds ruined by sloppy, off-spec cast parts. They used this stuff for wing spars and fuselage skins, and now you’re using it for your hop up. It’s probably overkill, but "overkill" is basically our middle name.

Look, we could play the industry game and trademark some stupid marketing words or pay a YouTuber to tell you this Thing will magically double your range while they shill you a generic flashlight. PolarStar don’t play that. We designed this with a zero-BS focus on the stuff that actually matters: consistency, fitment, and air-seal. No fluff, no "proprietary magic," just a straight-forward, precision-engineered tool that does exactly what it’s supposed to do every time you pull the trigger.

The heart of this Thing is our TDC (Top Dead Center) slider system. Unlike the old-school sliders that shift if you sneeze on them, our TDC arm applies perfectly vertical pressure for a consistent flight path.

We’ve modularized the design so you can actually tune the fitment for both AEG and HPA builds. While we have some serious upgrades in the works—like interchangeable gearbox lips to kill "mid-cap syndrome" and barrel slot wing bushings to eliminate rotational wobble—those will be available for purchase down the line as optional accessories. For now, we've focused on the core essentials. If your hop up is snug and your nozzle is centered, your gun shoots straight. It’s not rocket science; it’s just good engineering.

SPECS:

Compatibility: Standard V2 M4/M16 models (AEG and HPA)
Material: 100% Machined 6061 Aluminum
Adjustment: TDC Slider System (3x4mm nub compatible)
Color: Batch 01 - Medical Metal Gray
Manufacturing: Made in the USA

WHAT’S IN THE BOX?

The hop up Thing and the parts to make it work. We’ve included a 0.305” gearbox lip (standard for most AEGs), a 3x4mm round nub, and even an ARO (Axel Retaining O-ring) Tool because we know installing those tiny 1x1mm O-rings is a pain in the ass without the right gear. We also threw in 5 shimming O-rings and a molded barrel clip to keep everything tight.

This product is excluded from all discounts.

Everything Except - Blem, Purr, UGS, CGS

JACK™ HPA Conversion Kit

Hop Up Thing - Fine Adjustment Ring

PolarStar Direct Attachment

A PolarStar Hop Up Thing

PolarStar Gift Certificate