Took out my new gen 4 19 for the first time today and put about 300 through it. Now I will start out by saying I am a glock guy and always will be, I have bought 4 of them (gen 3) and never had one problem through 10k+ rounds over the years. The new gen 4 was disappointing though, now it was mostly my fault as due to a move I have not shot any of my glocks in about a year and a half so I had to relearn the trigger which I got use to at about round 200.
My main concern with this gen 4 is very simple, in 300 rounds I had 2 ftf which a quick mag slap fixed and I was getting hit in the face and arm about every other round. Now the only reason I have not already dumped this gun for the brass in the face is like I said I like my glocks and can work around it.
Any way the following is 10 shots from 10 yards, the poor grouping is me still getting used the the trigger.