OK guys I am a PROUD owner of a SCAR 17 (2years now) maybe 300 rounds fired , sorry just haven't had the time to shoot more lol. OK here is my question I got this guy says he worked with FN during the beginning of releasing stages of this weapon and says there where 2 major issues with the SCAR , he says the upper will crack said it was a flaw , is there any truth to this ? I wouldn't pay him any mind but its kinda like that nagging voice inside my head so i wanna know where he got this from or is it just a guy who wishes he could own this rifle !!?? The other was the stock rattle when its fully extended , which it does rattle a bit . well any help to get that nagging voice out of my head will help lol.