Kral Arms Lube for side lever bullpup

I’ve posted a few times about the new empire xs I got, and am wondering about lube and maintenance for the cocking and trigger mechanisms.

I put a little silicone lube on the pellet probe since there’s an internal barrel oring (after I cleaned the barrel with a patchworm and ballistol)

There is a plastic slider that slides between the barrel and pressure tube, the rest is metal on metal.

Can anyone offer some suggestions on lubricating this? I have silicone lube, three in one oil, krytox, ballistol.

Thank you.

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