where to buy Cricket replacement orings

"CMRairgunner"I'm looking to buy a couple of replacement chamber sealing orings 5.5 X 1.5 MM for my Kalibr cricket. It's the oring that seals the probe #66 on Kalibr exploded parts list diagram. Thanks
CMR, I'd have to double check the part and size of the O-ring but i should have some spare that I got for my 25. If there the same size and I have some I'd be glad to send you a few. You can email me if you'd prefer.
Jimmy

[email protected]