Ultimate Mil-Spec M115 Spring

Product description

Ultimate's MILSPEC springs made in Europe.
Made to military specifications, springforce 0.519N/mm.
Made of steel alloy (SiCr) that keeps the spring and gives the right power to your AEG. Zinc plated.
They are color coded so you can easily see which is which if you need to quickly change the spring out at the game or just mixed up a bunch of feathers at home.
The muzzle velocity is for a 300mm weapon inner barrel and 0.20 gram BBs. Inner barrel length, hop-up and how tight the gearbox is also affect the muzzle velocity.

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