"I am looking to get a 22lr pistol that will be suppressed. But, most importantly I need to be able to upgrade it with a clean, crisp, light trigger. Looking for a trigger pull around 2lbs. Any recommendations for pistol and trigger upgrade?"
I have one right here. It's a Ruger 22/45 with 4" threaded barrel, Volquartson sear and hammer, and TandemKross hammer bushing.
I've shot the pistol with an extended muzzle weight which helps settle it on the sandbags and a 3x scope out to 100 yards. It's "rifle accurate" at that range.
With sub-sonic ammo and a cheap muffler, it's acceptably quiet.
The trigger is user friendly beyond most expectations. I don't know if it's 2# but it's far lighter than you'd want to use with gloves.