Quote:
Originally Posted by red_noir
I got myself a set of systema high speed radial bearing shims and systema shim kit? what spring would you recomend?
red_noir
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Hey Red, springs are really a prefrence I guess, it depends what FPS you want or if you are attempting to adhere to an FPS limit. I myself enjoy guarder springs, some people like systema or airsoft surgeon.
I currently have a guarder SP90 and in mine it gives a decent FPS around 345.