This kit contains a complete set of high quality valve and base plate O-rings to allow you to rebuild 3 Tokyo Marui Mk23 SOCOM fixed slide magazines.
Please note that Tokyo Marui Mk23 magazines have an over-pressure valve in the base plate, it may be necessary to block this while replacing the base plate O-ring.
9x Release valve O-rings
6x Fill valve O-rings
3x Silent fill O-rings
3x Base plate O-rings