So what is the background to your IMFDB user name?

[gunguy001]

My name, well when I first started, people would call me the gunguy until they could remember my name.
As for 001, that was the last three from my military service number.
I always got in trouble because I would rattle off my rank, name and finish it off with "double 0 one"
I got the usual reply, your not f@$%ing james bond troop!