G&G GR15 Spring

[jimbo477]

Hi Guys,
Does anyone know what spring comes in a standard G&G GR 15? eg: M100. I have a standard one and its running 342FPS, the only change to the entire rifle is it now has a MadBull V2 6.03 barrel in it. I need to down grade it to about 328FPS.

[Caldymoose]

Re: G&G GR15 Spring

G&Gs springs, in my experience, tend to be quite heavy and stiff. The actual rating of it i don't know. If you want to drop it to 328, need to downgrade the spring to an M90 really!

[Mickydoos]

Re: G&G GR15 Spring

That's the first I've heard of a GR15 firing relatively hot out of the box. Mine came in a 315 and since has settled to around 295-300.

AFAIK G&G's are supposed to have a M100 out of the box firing at 330ish or lower.

I'd try another M100 (careful of brands, some brands use 0.25g BBs to measure their springs, I know SHS do)