3J+ Airsoft Spring – Upgrade Your Sniper Rifle for Maximum Performance

The 3J+ Airsoft Spring is already proven to be one of the first choice to boost the power and precision of Silverback SRS, Tac41, Novritsch SSG10, 24, 96, Modify Scout, and more. This premium airsoft sniper upgrade spring offers higher FPS, greater Joules, and all of that with an easier bolt pull compared to other brands.

Why Our 3J+ Airsoft Spring is the Best Upgrade spring for airsoft sniper

• Consistent and Reliable FPS: The Rapax 3J+ airsoft spring (with heavy bb’s) delivers:
  • 2.8J (300mm-G-Spec) -under 500fps with 0.2bb
  • 3.4J for standard 16″ (420mm barrels)- over 520fps with 0.2bb
  • up to 4J in long barrels. FPS and Joules may vary based on your setup (e.g., barrel length, piston weight).
• Compatibility: This 3J+ airsoft spring fits perfectly in all popular models (mostly all or them use 13mm springs).
• Enhanced Power with Easier Pull: With the Rapax 3J+, you increase airsoft sniper FPS and Joules compared to standard springs. Not only does it give you higher power, but it also makes the bolt pull smoother and easier, compared to competitors. Less effort & more power.

Airsoft Upgrade Compatibility

The Rapax 3J+ airsoft spring is perfect Silverback SRS upgrade or Tac41 upgrade, and it will perfectly upgrade Novritsch SSG10 or Modify Scout or any airsoft sniper gun with a 9mm spring guide. It is also a perfect fit for aftermarket heavy pistons as Stalker Scorpion, Wasp, Edgi.

Built to Last – Over 10,000 Shots

• Long-Lasting Performance: Made with the highest quality wire, our 3j+ airsoft spring is designed to withstand over 10,000 shots without losing power. Thanks to our advanced tempering process, you won’t experience significant FPS or Joule loss over time.
• Premium Construction: Rapax springs are handmade in Europe using the best materials, ensuring reliable performance and durability. These springs provide a long lifespan, even with heavy use.

How to Optimise Your Rapax Spring Performance

• Hop-Up Adjustment: For accurate measurements, always adjust your hop-up using heavy BBs (not 0.2g). Proper adjustment ensures real J/FPS output and optimal flight path and trajectory.
• Lubrication: Apply lithium grease or a thick grease to the spring and spring guide for better performance and reduced wear.
• Power Adjustability: Need a lower FPS? You can safely cut 3J airsoft spring coils without compromising its integrity. Watch our video guide here.

Upgrade Your Sniper Rifle Today with the 3+J Airsoft Spring

• Higher FPS & Joules: Get more power with an easier pull.
• Durable: Tested to last over 10,000 shots without power loss.
• Silent: Reduces the annoying twang sound for stealthier shots.

Order Your Rapax 3J+ Joule Spring Now and take your airsoft sniper rifle’s performance to the next level!