The "NY trigger" is a spring assembly. Thats even easier to fix and have a second "assembly available for inspection.
But I'm sure it'd be the end of their career if they ever got caught.
Are there some kinds of spring locks on the pin holder assemblies?
I don't know. I just remember that the NRA blocked an effort to mandate it for all guns in the US. And then soon after it was mandated for the NYPD.
Why would anyone wanna be a cop in that stupid ass city?
Well, the people who live there might want to police their own town if they were inclined to become a cop. And also it is a large and prestigious police organization in a large and prestigious city. That may draw people to want to join.
Plus, it isn't like any one cop is going to be in a shootout all that often, and if they do happen to accidentally hit a bystander while engaging in a legitimate shooting, they'll probably have legal immunity, with the city bearing the brunt of any legal challenge.