I have two of them. Both are butt ugly but in my experience, very reliable. An Amantino is the first gun I grab for hunting in situations where one of my good guns could get scratched or dented. Make sure the internals are thoroughly clean. Mine were packed with gummy grease from the factory and wouldn't fire all the time. I completely dis-assembled both guns, cleaned the crap out and oiled moving parts with Eezox.

Practice safe eating. Always use a condiment.