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Product Image O-Ring Repair Kit For KJ Works Pistol Magazines

O-Ring Repair Kit For KJ Works Pistol Magazines


This repair kit contains enough high quality replacement O-rings to replace all of the valve seals in eight KJ Works green gas pistol magazines and convert them to silent fill, all packaged in a small plastic 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 leaks.


Confirmed to fit the following KJ Works gas magazines :-








Ruger 10/22


CZ 75



Contains :-


24x Release valve O-rings

24x Fill valve O-rings

8x Silent fill valve O-rings


Assembled in the United Kingdom by Lees Precision Engineering.

UK Shipping Prices

Royal Mail First Class - £1.80, free for orders over £30.00
Royal Mail First Class Signed For - £2.70 flat rate

International Shipping Prices

Royal Mail Standard Airmail - £3.00
Royal Mail Standard Airmail – Free for orders over £30.00
Royal Mail Priority Tracked & Signed For Airmail – Starts at £9.00


Lees Precision Engineering does not ship to the following countries,
China, Indonesia, Peru

Dispatch & Delivery Times

Orders are normally dispatched within 3 working days of receiving payment.

Orders within the United Kingdom generally arrive within 1 – 2 working days of being dispatched however may take upto 10 working days, especially during peak times for Royal Mail.

International orders generally arrive within 3 – 10 working days of being dispatched but may take upto 15 working days.

International orders to Canada and South American countries often take slightly longer and may take upto 20 working days to arrive from the date of dispatch.