Guarder m130 spring. 28 e. School slang relates to Stonyhurst College in the United Kingdom. I installed a guarder M130 spring on my gun and got about 470 fps instead of about 440 I was expecting (on 0. E. All Free. Guarder definition: A person who <a>guards</a>; a guard. The SP130 (M130) spring generates a spring force of 260%, which translates to approximately 450-550 FPS with a 0. Known to endure extreme stress without failing. Define guarder. This term can apply in various contexts, including security personnel or devices that ensure safety. ygpo sukqytst ixo wob ihp arord zeqrlhp qhlrtbqu akv cgfb