UK26 Spring
The K26 is a staple in the nerf hobby. It is the original upgrade spring and has been integraded in hundreds of blaster upgrades and original designs over the years.
This spring is notoriously hard to get hold of in the UK and importing it, even in bulk was a spicy fee. We went to a UK spring manufacturer seeking an equivalent and they came up trumps with this bad-boy. All the power of the original, but measuring 280mm long with flat ends for easy install, but most importantly, much easier on your wallet.