Congrats to the OP!

I'm in total agreement except I kept the original trigger on my 15-22 MOE. Over 4,600 rounds as of last range visit. I had to send mine back to S&W for warranty replacement on the bolt carrier as the guide rails were rough. The replacement also required some fine sanding & polishing, plus I installed the Volquartsen extractor. Smooth sailing ever since.

I mounted a Nikon Prostaff II Rimfire optic to compensate for my elderly vision. Can hit bulls-eyes out to 150m from a bench rest, the farthest I've attempted. My favorite target shooting is hitting 1-2-3-4" steel spinners at around 50m.

When I start shooting the 15-22 at the public range, I initially hear some sneers from the "true" AR-15 shooters. Later, after they've exhausted their expensive (loud!) ammo & my 15-22 is still blazing away (Pew! Pew!) w/ a stack of 25-round mags; the questions start from the crowd with visitors asking "what kind of rifle is that?".