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Old September 22nd, 2013, 21:06   #5
lurkingknight
"bb bukakke" KING!
 
Join Date: Jul 2011
Location: Ottawa
more than likely a 120 spring with a bit of an air leak.

If you open it up and it has a bearing plate on the spring guide and a bearing inside the piston... you can remove the bearing and the 2 plates on the piston side and it will most likely drop under 400 fps without needing a new spring.

If you have no bearing on the spring guide, you can't do this and you need a 110 spring.

edit: I really doubt you have 2 bearings though... since the ctac is more likely a marked up CYMA or JG g36.
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I futz with V2s, V3s and V6s. I could be wrong... but probably, most likely not, as far as I know.

Last edited by lurkingknight; September 22nd, 2013 at 21:09..
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