Well Upgrade Set For MB01, MB05, MB06 AND MB08

Code: FBP0882
  • 550FPS Kit
  • Aluminium Made
  • Piston / Spring Guide

A high-power Upgrade Kit for your WELL MB Series Sniper Rifle, that will take your output FPS up to a massive 550FPS w/ 0.2g BBs. This drop in Kit comes supplied with a hard Aluminium Piston, a 550FPS Main SPring and an Aluminium Spring Guide w/ Bearings. If you own a WELL MB-01/MB-05/MB-06/MB-08 and want to take it's performance to the next level, then this WELL Upgrade Set is exactly what you need.

Full description



  • Upgrade Kit
  • For WELL MB Series
  • MB-01/05/06/08
  • Aluminium Constructed
  • Aluminium Piston Head
  • Aluminium Spring Guide
  • Spring Guide w/ Bearings
  • 550FPS Main Spring
  • Medium Difficulty Installation
  • Silver Finish
  • Very Cost Effective Upgrade

Package Includes

  • Well Upgrade Set For MB01, MB05, MB06 AND MB08



Internal Part Type
Pistons, Spring Sets,

Weight and Dimension

Weight KG Icon
Weight (KG)
Approx. 0.1kg


Colour Wheel Greyscale
Item Colour
Construction Icon
Internal Part Construction

Part Specific

Part for Power Source Type
Weapon Platform
  • MB-01
  • MB-05
  • MB-08
  • MB-06
Package Includes
  • Spring Guide
  • Piston
  • Main Spring

Spring Specific

Spring Approximate FPS
Approx. 550fps, using 0.20g BB

Bearing Specific

Spring Guide Bearings

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.