Yah theyre made of the same materials that are used widely in manufacturing including the aeronautics industry.
Thats a false comparison. Different uses and different types of stress. There's a reason why quality firearms don't use the types of metal tha teh hi-point does.
I will never understand why people feel the need to justify their purchase. If you bought a hi-point be happy with it. Just don't tell me its a serious use gun. I'm not going to use my HK as a boat anchor and you're not going to use your hi-point to win any competitions or go on any raids.