Kronos 3.7" K26 Spring with squared ends
Nerf mod Kronos Spring (Strong-prime) 135FPS average (NEW) - Out of Darts
Kronos 3.7" K26 Spring with squared ends

Dartzone Liberator Spring (120 FPS)

$5.00 Sale

PRODUCT DESCRIPTION:
The Dartzone Liberator Spring is a custom made spring from a K25 that offers a roughly 120 FPS average compared to the stock average of 90 FPS. This mod is relatively easy and light enough for most ages on the prime. 

Super easy install. Just take off the shell and the plunger can be removed without taking anything else out. The custom cut K25 is slightly longer than the stock spring so you'll need a tiny bit of compression to get the screw back in but it shouldn't be too difficult. Also careful with the ammo load door to keep the tension spring on as it can pop out easily. 

FEATURES:
• Easy difficulty on installation
• One end flat, one end cut, About 150mm length
• Around 120FPS

SPECS:
• Custom made compression spring
• Material: Made in the USA of USA spring-tempered steel

Customer Reviews

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R
Ruben Teitler
Excellent upgrade

The Liberator looks and feels great as a blaster - but let's be honest, 90 fps stock isn't really up to Rival par. This custom spring costs peanuts and is SUPER easy to install, turning it into an absolute monster.
Really pleased with Out of Darts as well, (international) shipping was speedy and without any issues.
The only reason I'm not leaving a 5 star review is because I have some concerns with the longevity of my blaster, which is very creaky and full of wobble, and I kinda doubt it'll be able to handle the K25 over time. Still, that has nothing to do with Out of Darts and their impeccable service.

T
Tan
Great spring upgrade!

Delivery was quick and the spring was nicely packaged. Super excited to get this installed. So much better than the below rival average. This thing hits like a beast without the prime being too tough.