The first thing that came to my mind when I opened the air intake to attach the quick connector, I noticed a crack in the hose. I returned it and got another one, but this time with a faulty spray nozzle. However, I decided to keep it because it still worked. After using a lacquer, I had to clean it thoroughly inside, and when I tried to remove the brass front part, I noticed the exact same type of crack in a different spot on the new gun. Literally, in both cases, I didn't do anything wrong, I simply used the included keys to turn it counterclockwise to remove it.

Quite reliable and functional for its category, compared to other similar cheap paint guns. It is the second one I have purchased, not because my previous one broke, but to have a second one to work with different materials, varnishes, and colors without needing to do a complete cleaning every time. The nozzles and other components have not presented any problems so far.