I've been on a long break from carrying and shooting for a while since I got out of the Army, but today I rented a USP 9mm and put 200 rounds through it. Last time I shot a USP was a .45 perhaps 15 years ago, so I mostly wanted to get re-acquainted with the manual of arms on this particular weapon. A little background, my first personally owned pistol (that I still have and carry) is a 1911, so I'm used to cocked and locked. Shot a few matches with it. Had it since 2002. Most of my training has been on M9s however, so I became reasonably proficient at the DA press-out and SA transition. I also have some trigger time behind striker fired guns.
I had a lot of fun practicing both DA/SA doubles, and comparing that to my accuracy with press-out from cocked and locked in SA. Of course I'm rusty, but I didn't notice much difference in accuracy between the two. One thing I've been wondering about though: does the flexibility of the V1 trigger in USPs create "too many" options that may confuse the user in a stressful situation? In other words, is it a liability to have a variety of carry conditions available on the same pistol?
On a 1911, it's always cocked and locked. On an M9, we always carried with the hammer down but safety off (we treated it like a SIG, no safety but double action on the first shot). Glock, duh. USP, seems like you have three different ways to carry. Fun on the range, but could this create confusion in actual usage? Perhaps one should pick a particular method and stick with it through training.
I have yet to try a LEM trigger but I am very interested based on what I've read here and elsewhere. That would certainly simplify things. But at the moment my brain is loving the USP because it gives me the option of 1911 or double action manual of arms.