WE CO2 Mag question.
 

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?

To answer my own question and for public info: The Canadian Tire ones work and they don't need to be threaded.

Now if they just made the retention screw for the mag shell out of something other than pot metal! I've stripped two trying to remove the shell to get at a stuck CO2 caplet.

Regular Crosman or Walther powerlets work fine.