ok, there are others who can help more in depth, but, yes, shit can be f*#ked up. did you take out your trigger assembly, hammer, and inspect those parts? are the springs ok? since it wasn't striking the primer hard enough, you said, that would've been my interest cracking open the receivers. then you found what you did, and i would've been both pissed and a little relieved. now you have a source and you need to inspect. replace any parts that aren't up to snuff. since it was new/never shot, the things are super tight and need lots of lube, no joke, for at least maybe 100-200 rounds. i broke both mine in sopping wet and still lube them up before any use. if you need further help pics are going to be needed. good luck and welcome.