Cheers for the advice guy's. I have searched through the other current travel bugs with 'Bullet' as the search criteria. I have found one that is very similar to what I had in mind "A Bullet With Your Name On It" looks approximately the same size as what I have the only difference being that it mine is completely black.
I will wait a while and see if I get any more advice before deciding on using it. I will also contact the owner of "A Bullet With Your Name On It" and see if they have had any problems with theirs.
Once again thanks for the advice.