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the JACK™ still retains the same performance and quality you have come to expect from PolarStar products
a standard MP5 could require any of 4 different nozzle lengths depending on the manufacturer
this is how you actually dial it in
In so doing it eliminates the need for a separate UFA and keeps your air rig profile to a minimum
A PolarStar Hop Up Thing Shims & Spacers the JACK™ still retains thePolarStar Hop Up Thing Bet you cant guess what this Thing is for. Its a hop up, or a paperweight, or maybe a very expensive fidget spinner, but were pretty sure its 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