This kit contains a complete set of high quality valve and base plate O-rings to allow you to rebuild 3 WE P228, XDM-40 or M&P9 magazines.

Contains :-

9x Release valve O-rings
6x Fill valve O-rings
3x Silent fill O-rings
3x Base plate O-rings
3x Base plate bolt O-rings

Assembled in the United Kingdom by Lees Precision Engineering.