Related to this thread regarding Glock triggers:
https://pistol-forum.com/showthread....Glock-triggers
To qualify as a "No", you pistol must be stock and as it was delivered to you.
Any modification to the spring or fire control group places you in the "Yes" column.
To start, my USP compact in 40 S&W (primary carry gun) has a match sear spring as the only modification I have personally made to the internals. It also started life as a DA/SA but was converted to heavy LEM by the previous owner. My previous and briefly carried USPc in 9mm was converted to light LEM by me. My USP in .40 is a range gun but has received a match trigger kit and V9 (safety-only) detent plate.