Looking at TKO / Rich variants. Has anyone looked at or used them together? Any difference in effectiveness / ease of use, ease of refilling?
I mostly care about how well they work, cost. Are there others I should be considering?
What do you think these are "filled" with? I have no experience with the models quoted, but I have seen and used a few myself, and they aren't filled with anything... but air.
Edit: Oh I get it now, you what to know if you can refill the gun's reservoir with the LDC in place...