Laylax Prometheus Non-Linear AEG Upgrade Spring MS120 (Emerald)

£7.99

An MS120 upgrade spring from LAYLAX with a variable-pitch coil and Emerald coating for quick identification. It suits technicians servicing gearboxes who want a defined velocity increase.

In stock

Free Shipping on Orders Over £200

  • Check Mark UK Based
  • Check Mark Over 15 Years in Business
  • Check Mark No-Hassle Returns
  • Check Mark 5 Star Customer Service
  • Stripe
  • Visa Card
  • MasterCard
  • American Express
  • PayPal
  • Apple Pay

Description

This LAYLAX Prometheus Non-Linear AEG Upgrade Spring MS120 (Emerald) is an internal power component for standard AEG gearboxes, designed to raise muzzle velocity and mechanical efficiency. The coil uses a variable-pitch, non-linear winding that is looser at one end and tighter at the other. This reduces the initial rotational strain on the motor and gear teeth at the start of the compression stroke, helping to give a smoother trigger break, lower battery drain and less shock on the gearbox shell.

Rated MS120, it provides a firm power increase and typically reaches around 370 to 400 FPS, depending on how well the cylinder assembly seals and compresses. The spring is formed from oil-tempered steel wire with an Emerald colour-coded protective finish so tension can be identified at a glance on the bench. It suits repair shops, custom builders and stockists.

  • Non-linear variable-pitch coil
  • MS120 rating
  • Oil-tempered steel wire
  • Emerald colour coding for identification
  • Typical 370–400 FPS depending on cylinder assembly efficiency

Additional information

Muzzle Velocity (fps)

301 – 400

Spring Type

AEG

Defcon Airsoft is an Introducer Appointed Representative of Social Money Ltd t/a Dopple, a company registered in England under company number 08054296, and is authorised and regulated by the Financial Conduct Authority and is entered on the Financial Services Register under reference number 675283. Registered with the Information Commissioner’s Office under reference number ZA026178

© 2025 Defcon Airsoft, 2a Stanton Road, Stoke-on-Trent, Staffordshire, ST3 6DD, VAT NO : GB301655338

46 users are watching this item:

King Arms M1A1 Paratrooper GBB Rifle - Real Wood

Benjamin Turner from Glasgow purchased

Northeast Famas GBB Front Nozzle NGR01NOZ0001

7 minutes ago

Jack Downing says:

Absolutely incredible customer service from these. Dave was wonderful and was very quick to resolve a minor issue I had with my online order. Delivery was also swift and the products are well packaged so there’s no worries about anything arriving damaged. Super chuffed with what I’ve received from Defcon.

Enjoy FREE SHIPPING
on all orders over £200

Jesse V. from United Kingdom (UK) purchased

Tokyo Marui Hi-Capa 5.1 GBB Pistol

Selling Fast

0