Beer bellies are most often the result of intra-abdominal fat (fat within the abdominal cavity where the organs are located). This fat is not amenable to either liposuction or reduction with a tummy tuck. Sorry, but if my diagnosis is correct, then weight loss is your only option. To confirm my impression, see your primary physician or a plastic surgeon.
I forgot to say that I'm 6'1 (184cm) tall