Silverback SRS Sniper Rifles, Parts & Upgrades

Both SRG and SRE Right-Handed & Left-Handed Hopup Chambers are designed specifically for SRS/HTI SilverBlack

SRG version is designed to perform with GBB bucking types (MR Maple Leaf, VSR PDI,...)
SRE version is designed to perform with AEG bucking types (Maple Leaf, SilverBlack,...)
SRG and SRE accept both bridged and unbridged barrels
One-piece Precision Hop Arm design with adjustable damping for best accuracy and consistency
Metal Locking C-Clip design for rigid barrel installation
Stainless Steel Plate for smooth angle alignment up to 8 degree twisting chamber -99.99% airseal for heavy BB weight

Rapax 2+J Airsoft Sniper Spring – Perfect Upgrade for TAC41, SRS, SSG10, 24, 96, Modify, and more Upgrade your airsoft sniper rifle with the Rapax 2J+ sniper spring, trusted by thousands of satisfied users worldwide. Designed for popular models like the Silverback Tac 41, SRS, Novritsch SSG10, SSG96, Modify Scout, and many more, this spring ensures enhanced performance and reliability.

Why Choose Rapax 2+J sniper spring?

• Universal Fit: With a 13mm outer diameter, it fits perfectly in almost all sniper rifle replicas.
• Easier pull : Enjoy a lighter bolt pull while achieving higher FPS compared to standard springs you used before.
• Made for UK airsoft sniper limit: you should be safe to use it in any field in the UK
• Silent Operation: Reduces the “twang” sound common in airsoft sniper replicas.
• Proven Performance: Achieves consistent results of 2+ Joules in standard setups, with J varying by barrel length.
  • Power Range: From 1.9J (300mm barrel) to 2.8J (longest barrels).
  • Fps with 0,2BB will be around 450-500 fps for standard barrels.

Compatibility Rapax 2J+ airsoft upgrade sniper spring is compatible with: Silverback Tac41, Silverback SRS, Novritsch SSG10, 96, 24, Modify Scout ect, and it is perfect fit for aftermarket heavy pistons as Stalker Scorpion, Wasp, Edgi.

How to Optimize Your Rapax 2J+ Sniper Spring Performance

• Hop-Up Adjustment: For accurate measurements, always adjust your hop-up using heavy BBs (not 0.2g). Proper adjustment will give you 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 the Rapax 2J+ spring coils without compromising its integrity. Watch our video guide here.

High-Quality Materials and Longevity

• Premium Wire: Made from top-grade spring wire for extended durability.
• Tempering Process: Specially treated for a long lifespan with minimal FPS/Joule loss over time.

Frequently Asked Questions

Q: Will the Rapax 2J+ work with my Novritsch SSG10? A: Yes! It will work excellent as Novritsch SSG10 upgrade spring..

Q: Will this spring work in Silverback models? A: Yes! This spring is often a first choice to upgrade TAC-41 spring, or SRS spring.

Rapax power up rings for 9mm spring guide

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 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 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 Optimize 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.

• 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.

Rapax 2.8J Airsoft Sniper Spring Please note that the stated FPS is higher than UK site limits - these high-power springs are designed to be used in conjunction with sound dampers, which reduce the overall noise produced by a sniper's spring at the cost of FPS output, allowing for maximum performance to be maintained.

Wide Compatibility The Rapax 2.8J spring is made for seamless integration with popular sniper replicas, including:

• Silverback SRS & TAC41
• Novritsch SSG10, SSG24 and SSG96
• Modify sniper models

Easy Adjustment with Spacer If you still have room for extra performance, simply use the included 4mm power-up spacer to gain more power.

Proven Durability Crafted in Europe from the highest-quality spring wire, the Rapax 2.8J spring: ✔ Delivers over 10,000 shots without losing power. ✔ Features an electroplated finish for rust resistance and reduced friction, giving you smoother performance and longer spring lifespan.

Optimized for 2.8 Joule Limit (with 0.48g BBs) The Rapax 2.8 J spring has been tested with heavy BBs in:

• Silverback SRS, Tac41 spring (16″ barrel)
• Novritsch SSG10 spring (430mm barrel)

Ready for 2.8J Airsoft Sniper Field Limit If you have more Joules then your field’s Joule limit, you can trim the coils without damaging the spring’s integrity.

Installation and Maintenance Tips

• Use heavy BBs for accurate Joule measurements.
• Adjust the hop-up for the best flight path before testing energy levels.
• Apply lithium or thick grease to the spring and guide to reduce “twang” sound and improve performance.

RMS 2+J 13mm Airsoft Sniper Upgrade Spring for Silverback, Novritsch, Modify and More Looking to upgrade your airsoft sniper rifle? The Rapax RMS 2+J airsoft spring is a great choice for quality, durability, and silence, and it works great with heavy pistons. Designed to be used with Silverback SRS, TAC41, Novritsch SSG 10, 24, 96, and upgraded VSR-10 models with a 9mm spring guide, this APS2 spring delivers outstanding performance.

• You get what you need:: With this spring you should get 2+ Joules of power or with heavy bb, and most used 420-430mm inner barrels, That´s around 320 FPS with 0,48. Longer barrels will get more Joules and FPS. if you get less than needed, just add spacers (included in a package) on a spring guide.

What is RMS? RMS stands for Rapax Modular Spring, known for its adaptability and high-quality engineering. Every RMS 2+J airsoft spring includes two plastic spacers (2x4mm) to fine-tune your FPS or Joules, ensuring compliance with field limits.

Key Features of the RMS 2+J Airsoft Spring

• 13mm Outer Diameter: Perfect fit for compatible sniper replicas.
• Durability: Made from high-grade spring wire, tested for over 10,000 shots without losing strength.
• Electrically Coated: Rust-resistant and ensures smoother operation on the spring guide.
• Silent Performance: Minimizes the “twang” sound in airsoft sniper replicas, providing stealthy operation.
• Modular Adjustments: PETG spacers allow you to easily adapt the spring’s power output.

Differences from Light Pull Series The RMS 2+J airsoft spring is shorter than the light pull series, with a slightly harder pull for enhanced performance with heavy pistons. Its design focuses on providing increased silent shots and easy installation.

Important Notes for Users

• Always measure Joules with heavy BBs (not 0.2g) and adjust your hop-up for optimal flight paths before testing.
• G-Spec sniper replicas (with 300mm barrels) require harder springs to achieve the same FPS/Joules as longer barrels.

Superior Quality You Can Trust Rapax Modular Springs are handmade in Europe, ensuring:

• Tight Tolerances: Prevent unwanted sound and improve consistency.
• Spring Tempering Process: Guarantees longevity and minimal FPS/Joule loss over time.