This repair kit contains enough high quality replacement O-rings to replace all of the valve seals in 8 VFC M4 or Hk416 GBBr magazines and convert them to silent fill, all packaged in a small compartment box.
These kits are ideal for keeping in a kit bag or toolbox ready in-case you find a magazine has started leaking just before a skirmish or for fixing any existing leaking valves.
32x Release valve O-rings
16x Fill valve O-rings
8x Silent fill valve O-rings
Assembled in the United Kingdom by Lees Precision Engineering.