The only reason I ever ever had to clean anything inside my mini comp was because of ****ty dirty crossman twelve grams. It still is thus far my favorite stock class gun, and I am going to most likely have another built this summer. I waited like 7 weeks for mine.
What I love about the mini comp really specifically over the phantom is the pump stroke, trigger, easy of reassembly, and now it comes stock with a 3 insert barrel kit. Well worth the money.