Got the call from my FFL telling me my MPX had come in. I did a quick inspection and everything looked good. I got her home and disassembled her for the initial cleaning and lube. When I was wiping down the bolt i noticed a strange mark on it. After closer inspection it appears to be cracked! A Sig CSR said there was no way it could be cracked, that he has seen them tested with "triple charges" and that the bolt is virtually indestructible. Took it to my LGS and they told me not to run it and that they thought it was cracked. Sent pics to Sig and they sent me a new bolt, but thats not the point. I went almost a month without my new $1700 gun... not very happy. Has anyone ever seen an MPX bolt crack? And how exactly do you "triple charge" a little 9mm case?!