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Super Moderator
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Discussion Starter #1
so i got a RAP4 spring kit cuz the spring i had wouldn't shoot over 210fps

i installed the black (lowest) spring and got up to 220ish

i installed the silver (middle) spring and now the gun won't fire. i'm assuming it puts too much pressure on the sear when cocked. but what's the point of the spring if i can't use it? according to the kit specs, the difference per spring is ~20fps
 

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Won't fire? Is this a mech or electro Spyder? Is it cleaned and lubed, and has a fresh battery? Did you back out the velocity adjuster when swapping springs?
 

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Wannabe Pro
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186 Posts
maybe a leak somewhere in the gun? I had a similar problem on a brass eagle stingray, so I popped a few washers where the velocity spring was and it was shooting back up to around 300fps.
 
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