Lees Precision Engineering O-Ring Repair Kit for TM M870/Breach Magazine Large Kit

Lees Precision Engineering
Code: VRK-010
  • Silent Fill Conversion
  • Enough For 8 x Gas Tanks
  • For TM Breacher & Tactical

A convenient kit created for both Tokyo Marui's M870 Tactical and M870 Breacher gas shotguns, designed to allow players to replace damaged or worn O-Rings in the Airsoft shotgun's gas tanks, and bring them back to brand new condition. 

Full description


Give your gas tank a new lease of life! The O-Rings are direct replacements for the originals which come with the magazine, and features release valve O-Rings, fill valve O-Rings, silent fill valve O-Rings. There are enough components in this set to allow you to convert up to 8 of your magazines to silent fill. These kits are supplied in a handy compartmentalised storage case, with individual compartments allowing you to store the various O-Rings, or similar small (and easily lost!) components while you work on your TM Shotguns. These kits are ideal for keeping handy in a kit bag or tool box without the parts going missing, or suddenly find a leaky magazine just before a skirmish.


  • High quality O-Rings
  • Enough components for 8 M870 gas tanks
  • Sufficient to convert 8 gas tanks to silent fill
  • Repair leaking Marui M870 gas tanks
  • Reduce gas escape while filling with silent fill valve O-Rings
  • Convenient storage case to store small parts 

Package Includes:

  • 24 x Release Valve O-Rings
  • 16 x Fill Valve O-Rings
  • 8 x Silent Fill Valve O-Rings 
  • Compartmentalised Carry/Storage Box



Parts & Accessories Type
Maintenance, Magazine Part,
Over 18 Only Icon
Over 18


Colour Wheel Greyscale
Item Colour
Construction Icon
Material Icon