So I recently picked up an open bolt We M4 with mags and in my research I found that there were two types of caplets, threaded and un-threaded.
Now this was from a bulk site but I just want to make sure I get the right kind before blowing $80 on the wrong kind of CO2 caplet.
Also I was looking at the JT brand 'Powerlet' from CT Linky
. Would these work?