Information Needed on muzzleloader

[old man]

Can anyone tell me any information on a Italian made , .50 Caliber, inline muzzleloader, that I purchased a few years back at a gun show. The only marking on the barrel are that it was manufactured by MML,Inc. and the barrel shows it was made in Italy.
That is all I know about it, I have attempted to check Knight, CVA,
and Dixie gun works with no results. Any help in this matter will be greatly appreciated.