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PolarStar Concave Spacer (PCS) Officially Licensed SCS High Performance Airsoft Hopup Spacer
by Daniel L. Date Added: August 26, 2010
Great little piece gets the job done same as the shredders concave spacer I used this with the combination of a systema hop up bucking, matrix steel tight bore barrel 6.03 510mm went into my agm m16a4 accuracy range went from 135-150 ft to 175-180 ft defy recommended but if you do get this spacer make sure to use a soft type bucking like systema, guarder clear type, or the stock one do not use the firefly bucking with this it will not work btw for best performance team this up a good tight bore barrel as well later

Drop in upgrade
Increase's range and accuracy
Increase's fps in some case's

Can be some what of a pain to install
well that's really it

Check out my accuracy test at type in agm m16a4 accuracy test
screen name Kingd3001

Rating: 5 of 5 Stars! [5 of 5 Stars!]
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