Ares Tune-Up M-100 AEG Spring

Code: 510156
  • Great Spare
  • For Airsoft AEG
  • Provides 328fps

A replacement spring for your Airsoft AEG weapons.

Full description


The spring is designed to produce 100m/s / 328fps, dependent on the efficiency of your gearbox's setup. This is the perfect spare for those who modify their weapons, or for those who have a weapon which is too hot to use and requires downgrading.


  • Provides roughly 328fps, depending on your entire setup
  • Ideal for those who have an incredibly efficient air sealed Airsoft gearbox
  • Also ideal for countries and Airsoft site with much lower FPS limits

Package Includes:

  • Tune-Up M-100 AEG Spring

Special Instructions:

Please note, the end result of your rifles FPS is determined by many other components not just inside your gearbox but also the barrel length, hop-up unit, BB weight and much more. Any ratings above are an average found from testing by the manufacturer. If you are unsure on fitting this spring and what to expect from doing so, please feel free to contact out customer services either via email at: or call our team on: 01484 644 709



Internal Part Type
Patrol Base - Warning Icon
Upgrade Parts


Colour Wheel Greyscale
Item Colour
Construction Icon
Internal Part Construction

Part Specific

Part for Power Source Type
Package Includes
Main Spring

Spring Specific

Spring Approximate M/S
Approx. 100m/s, using 0.20g BB
Spring Approximate FPS
Approx. 328fps, using 0.20g BB

Size guide

Parts Fitting

Upgrades and Downgrades should only be undertaken by experienced players, or Airsoft Technicians. Please note, changing any internal parts of a weapon voids its warranty unless done in-house by our staff. 

Please ensure that when fitting parts the part purchased is the correct part, as once a part has been fitted we cannot accept return.

We do know that players love to tinker, so we're here to give you help should you require it, and if needed you can get in touch with our workshop for more help!

Unique Parts

Please note that some parts may be unique to a specific brand of weapon. For example: Parts for an ASG M4A1 may not fit an ICS M4A1.

Parts from the same brand typically have a high chance of fitting, though be warned, some replicas use unique parts, so please ensure the part will fit before you attempt to fit it.

If you require help with fitting any parts feel free to get in touch with us via our Contact Us Page.