Lees Precision Engineering CNC Machined Power Down Valve Set For KSC/KWA S7/NS2 SMG-7 & MP9

Lees Precision Engineering
Code: GBB-001
  • 2x Power Options
  • 6026 T9 Aluminium
  • CNC Machined Precision

Precision CNC machined from high quality T9 aluminium, this set of two power down valves allows users of certain gas powered KSC/KWA branded Airsoft guns to reduce their output FPS to a more game-safe level. 

Full description


Designed for use with KSC/KWA gas guns (full compatibility list below), this valve set is designed to allow you to lower your Airsoft gun's FPS, to site-friendly levels. Produced from 6026 T9 Aluminium, these valves are precision manufactured CNC pins, ensuring that they will provide the necessary tight fit required to reduce your Airsoft gun's FPS by either -35 or -50fps, depending on which particular valve pin you fit. Be sure to add a bit of lubricant upon assembly to ensure your gun operates smoothly. The expected results can vary depending on your BB, Gas and weather on the day of testing.


  • High quality power down valves
  • Each valves reduces by a different power, one for roughly -50fps the other roughly -35fps
  • Easy drop in design once you split your Airsoft gun components
  • Improve gas efficiency
  • Excellent quality materials 
  • Precision CNC machined from 6026 T9 Aluminium


  • SMG7
  • MP9
  • Kriss Vector
  • MAC 11
  • M9
  • M93R
  • MK23
  • USP Series
  • G-Series

Package Includes

  • 2 x CNC Machined Power Down Valve Set For KSC/KWA S7/NS2 SMG-7 & MP9



Internal Part Type
Patrol Base - Warning Icon
Upgrade Parts

Weight and Dimension

Weight KG Icon
Weight (KG)
Approx. 0.05kg


Colour Wheel Greyscale
Item Colour
Construction Icon
CNC machined 6026 T9 Aluminium
Internal Part Construction

Part Specific

Part for Power Source Type
Weapon Platform
  • EU-Series
  • Universal Pistol / .23 Series
  • B9
  • MP9
  • Vector
  • SMG-7
  • MAC-11
  • M93R
Package Includes
Power Down Valve

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.