this spring is very powerful and does not require much force to prime. I put it in my stryker and it works great :)
This thing hits incredibly hard with the np metal kit. Would definitely recommend the metal kit to anyone using this spring as my stock priming bar eventually broke because of the stress.
I decided to grab one of these to push my Nexus a little harder and this spring is crazy. I don't have any exact fps numbers for my particular Nexus but it's hitting way harder than stock. 150 fps was plenty out of the box for me but why not go higher. It's so easy to swap springs out that you can just switch between this one and the stock one.
Very good spring, it has very good consistency and shoots more accurate, especially with the half length darts. It is definitely worth the price, and it’s very easy to mod. I have one question, can you store the blaster with this spring in it?