I HAVE THE SAME PROBLEM AND HAVE NOT FOUND AN ANSWER YET. IF I FIND SOMETHING, I WILL LET YOU KNOW. I DON'T KNOW WHY US LEFTIES ARE ALWAYS DESCRIMINATED AGAINST.(LOL)
I AM ALSO LOOKING FOR A LEFT HANDED SLUG BARREL FOR MY SBE. I WAS TOLD THAT THEY MAKE THEM WHEN I BOUGHT THE GUN BUT SINCE FOUND OUT THAT ONE IS NOT MADE. IS THERE ANY OTHER OPTIONS OUT THERE FOR US LEFTIES WHO SPENT THE MONEY TO BY SBE'S.