The PolarStar Spring Guide for VSR10 / Bar 10 is a remarkable work of art by the Polar Star Custom Machine Shop. All of the Polar Star Products are made right here in the U.S.A. and are made out of the highest quality materials available. The spring guide is CNC machined almost entirely from stainless steel. The shaft diameter is precision ground to within 0.0005" tolerances and a ball thrust bearing has been added to the base to eliminate torque from the spring.
For: (Discontinued) Polar Star Spring Guide for VSR10/BAR 10
Very well made. I have a full set of PolarStar parts on my BAR10 right now and its my absolute favorite gun shooting at 580fps and effective to almost 300ft. I've toyed with Laylax parts on a friends gun and this is considerably superior to their spring guide. The only thing to watch out for is that this will not work with the standard piston. And I've only tested it with my 45 degree PolarStar piston, so I can only confirm that as a suitable replacement to go with this.
just because it needs a new piston (hardly a con)
Makes the stock part look like the chunk of crappy plastic it is
Needs new piston or won't work
(but hey, you should buy one of those anyway)
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