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Author Topic: Systema spring, M120 or M120S?  (Read 869 times)

Offline Lightning_Man

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Systema spring, M120 or M120S?
« on: April 04, 2006, 10:45:51 PM »
Warning Noob alert.

I am getting together stuff for upgrading a CA G36K. I see 2 different springs from systems, an M120 and an M120S. Which do I use? Is the S for short? maybe for smaller guns? Can't seem to find the information on any of the web sites.
« Last Edit: December 31, 1969, 05:00:00 PM by Lightning_Man »
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Offline Vince

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« Reply #1 on: April 04, 2006, 10:46:43 PM »
That just means it's stainless, Jeff.
« Last Edit: December 31, 1969, 05:00:00 PM by Vince »
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Offline Rocketboy

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« Reply #2 on: April 05, 2006, 07:04:43 AM »
Yeah that means Stainless but it test have shown that it also has a higher spring rate then it's cousin the M120.

http://www.poweredgehawaii.com/SpringTest.asp

For G36k I would use m120 since it's almost the same as the M4 and a M120S will push it over the 400FPS limit.

I actually recomend the SP110 cause usually the M120 will fluctuate over and under the 400 while the Guarder Sp100 will settle around 390. Remember 400fps is a limit not a goal... =P
« Last Edit: December 31, 1969, 05:00:00 PM by Rocketboy »
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