Paper clip end is perfect field expedient for the "key"..... minor inconvenience.
Hopefully no one was griping about needing that "tool" for the field stripping because it needs to be done rapidly and easily, if necessary, in a combat situation.
Got some bad news for you, if you are required to field strip your weapon in the middle of a firefight.... chances are you are irrevocably SCREWED! Tool needed or not.
In short, if your primary gets baulky, you had better hope you have a BUG rather than a take down tool.
GG
Fanatics of any sort are dangerous! -GG-
Which part of "... shall NOT be infringed..." confuses you?
Well now, aren't WE a pair, Raggedy Man? (Thunderdome)