Where are you...here in USA?
I've been looking for one for years...never seem to see them here...well rarely , anyhow.
I always thought one would be great for a single smooth bore ball gun...or sleeve on a fully rifled bbl.....even though I really don't like a single trigger...ha ha smile
I'd buy it if the price seemed reasonable
Back in England they go pretty cheap..like 200 bucks...but getting one over here is big hassle for cheap (but nice) gun
cheers
franc