|
I've had really good experience with the Prometheus springs, they compress alot easier than my GOOD PDI 150% spring, and still put out well. Depending on your goal fps, as well as what other upgrades you want to put in, I'd recommend the Prometheus 110SP, in a relatively bone stock MP5, it should give you around 330-340fps. Add in a bearing spring guide and tightbore barrel, that should set you around 350-360fps, more than enough for outdoor games using 0.25g BBs.
|