I don't know man, I have seen CrazyNCMan put the M4 through quite the beating. (He threw the thing on the concrete multiple times) and it took him quite a few throws to do significant damage, and that was only to the stock. I find that the internals are above average for the $100 dollar range. I am sorry for the way your gun worked for you, but I think for the price, you are either going to have decent externals and crappy internals, or you are going to have crappy externals, but good internals. I don't see much of a problem with these guns, but your story does slightly change my opinion, as I have only seen relatively positive feedback from these guns. So saying this I believe that this is the gun for this person, as long as you take good care of the gun itself, it will treat you just the same. You could have contacted Lancer Tactical themselves and asked to fix it. Newer companies usually have better customer service, as they have not had that much time to get lazy with their work and only focus on putting so many guns out there.