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If you've had the privilege of owning a PolarStar Fusion Engine, you will undoubtedly be aware that the trigger response is lightening quick and distance required for the actual trigger to travel in order to fire the weapon is very small. However, since they use the standard AEG triggers, which are made with a rather long trigger pull, there is a lot of unneeded travel time before the trigger actually hits the button inside the engine which begins the firing process.

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How to Shorten the Trigger Pull on a PolarStar Fusion Engine
Tom Harris for the Pyramyd Airsoft Blog
The solution to this is insanely easy, makes a HUGE difference and many of you may already know about it.

Find out how to do it after the jump...




Simply remove the two screws and small plate seen above, which covers the trigger.

Then, insert some sort of spacer inside the trigger area of the Fusion Engine, as illustrated below.

I just cut two small squares of some rubber weather stripping that I had in my scrap box.  If it isn't obvious, it's the small white square sitting directly behind the trigger, inside the gearbox shell.  There is no need to remove the other, larger side plate.  I was doing other things during the process of this illustration. 
How to shorten the trigger pull on a polarstar fusion engine, polarstar fusion engine trigger mod, polarstar trigger mod tutorial, pyramyd airsoft blog, airsoft guns, pyramyd air, tom harris media, tominator,
How to Shorten the Trigger Pull on a PolarStar Fusion Engine
Tom Harris for the Pyramyd Airsoft Blog
The only permanent modification you may need to do, depending on the size of spacer you use, is to file down a bit of the tip of that safety lever, which prevents the trigger from being pulled forward.  If you reduce the distance traveled of your trigger enough, the lever will be too long and you won't be able to effectively engage the safety, which is less than optimal.  But like I said, simply file down the length of that safety lever just enough to engage.  Since, in my illustration, there is very little room left between the trigger itself and the little black button, you don't want to over file the safety lever, because the trigger may consequently be able to reach the button before the safety lever has a chance to stop it.  Another less-than-optimal situation for (hopefully) obvious reasons.  If you have any questions about this process, please feel free to ask them here on the blog in the comments section below.
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