My norc commander was very stiff to pull back when it was new, it has loosened up considerably after firing approx 500 rounds through it, once you break it in you should notice a big difference. This is very noticeable if pulling the slide back while cocking the hammer at the same time. My best guess if the springs lose a little tension and other parts are smoothed out a little bit by friction if they were a little rough from the factory as norcs are known to sometimes (often) be. Don't worry about it too much, it will get better. The trigger remains heavier than I like and I will likely try fiddling with it at some point.