Hello friends, I'm hoping someone here may have some information regarding a most bizarre item. A pietta 1851 brass frame navy, with shoulder stock...and 25 inch barrel! I have yet to see any in the USA and the photo attached below is a deactivated one I found on a website in the UK. I know this is rare..but does anyone know why this model was made? Any clue as to if it ever released in the USA? Any information would be appreciated. Thank you.