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Old June 26th, 2011, 21:22   #7
xylum's Avatar
Join Date: Jun 2011
Location: London
Originally Posted by slink182 View Post
Is the spring marked as a "100" spring? Otherwise, how are you sure that it's an M100?

Spring codes (100, 110, 120, etc) are expressed in metres/sec. Most folks run M120 springs.
It was specified as an M100 from the distributor. Also, the field where I live is completely outdoors and therefore 350-400 FPS is the desired level.

I might just purchase a System M110 or M120 for outdoor and replace it if I ever get the opportunity to play CQB indoors.
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