....the internal locking system on my new 617-6. Never had one before and didn't really want it. But I wanted the gun, a 10-shot, double action .22lr revolver. I do love it a LOT. I can find no issues with the locking system. I have read/heard differing opinions on the subject. From what I can find out it works better on some guns that it does on others. Just wondering what experiences with which guns some of y'all have had/are having. BTW may I ask which gun you were referring to?