The Take-APart. The Model 999 is the only folding knife made by PUMA that the user can take apart for cleaning. It is one of the rarest knives for someone to have in their collection. It is considered by many to be the “Holy Grail” of Folding Hunters. Among collectors it is either the 999 Take-APart knife or the Model 947 Jadgmesser für Gams which is the rarest.