You have too remember that who ever is doing this may have a hundred or more scams going and it's hard to keep track of them all
The last email suggested that you might be a scammer.

Hi, the person that made the bid at that sum is a scammer he tried to fool me. His offer is not real that's why I will make you an awesome offer. Both guns for just $8000 what do you say ?

Hoping to hear from you soon,

I'm thinking this one may be in the US so I'll spend some time with him and see if I can get anywhere.

MP Sadly Deceased as of 2/17/2014