I get confused with these Glocks John.
I have a bb kwc 17 lookalike with no Glock markings and a gold colour barrel which works well
I also have a new bb Umarex Glock 17 which is good too.
Not to mention an ISSC M22 which looks like a little Glock with an exposed hammer.
I would have thought the dual ammo trigger would have more work to do?