People talk about perfection all the time but even Glock has had to change, tweek, fix issues through the years. Dagger has had some teething issues like any other firearm. Suprised there have not been more honestly for a newer firearms manufacturer. I know of the mag dropping, walking pins, and a slightly redesigned trigger along with curing some issues with tolerance stacking on the barrel lock.
Pretty normal stuff for mass produced pistols all things considered. Daggers (nor glocks) are not hand fitted to perfection. Bad batches of parts also will happen with anyone. Beretta had a bad run of soft steel on the slides for the 92 at one point. Sig Sauer has had all sorts of issues even with the legacy models through the years that were fixed. Ruger, S&W..... it happens to everyone at some point and will happen again. Even extensive testing such as military trials doesnt always catch it. The big thing is that they get fixed and the issues get resolved.
Im pretty good at spotting weak areas and potential failure points on firearms but even then I still get supised sometimes. Thats why no matter what firearm you choose its always important to become dilligent in terms of cleaning and inspection routines IMO. A lot of times after an initial break in or test fire a good inspection can catch ill fitted or out of spec parts and a little fitting will cure things and prevent the firearm from an eventual,more serious problem. The rougher a firearm is put together... the more work you might have to do.
For the Dagger... I kind of wish they would have done a couple things different. Making it run on Beretta 92 Magazines would have been nice (Glock magazines are not my favorite design AT ALL). The Trigger... I like what they did with the hinged trigger as those dingus triggers are not my favorite. Also would have been nice if they made drop in triggers for SA/DA and true DAO (FMK style) function. Those pattents are likely still in effect though from other designers. Same goes for aftermarket groups that have developed manual safety systems and striker control devices for Glocks. PSAs goal was to make it as close to the Glock 19 as possible though along with some subtle and popular changes for the American Market... and that they have done. So Kudos to PSA for that and Kudos again for not overcharging consumers.... And Kudos yet again for making it easy and affordable to purchase spare parts.
PSA did everything right with the dagger IMO. We will see where it goes from here. If I was at PSA I would be contacting Mecgar and designing an affordable all steel magazine for the Daggers that is compatable with exhisting Glock spec frames.. There are some high end ones out there already but they run around $100+ each. Mecgar or PSA would make a killing if they came out with an all steel 17/19 magazine for around $30.