Hey guys. I recently purchased a Model 10-5 with a 5 3/4"-ish barrel from 1971-1972 and I'm trying to locate a 2 piece BP box for it. I found one on Ebay, but the label says its originally for a 4" Model 10, but it looks long enough to fit a 5 3/4" gun. Does anyone know if S&W used the same box for both 4" and 5 3/4" and 6" barrels? Thanks.