It is the not-cocking issue, I have had this on at least 4 guns and I find it extremely annoying.

And just to throw it in there, the #1 gun, the Model 44/SA6 is just a piece of junk and springs flake out and that silly plastic cover for the Co2 caplet is just poor design- I just don't like it generally. Anything that is a repetitive pain-in-the-a$$ just aggravates me...