Ranger RD series compared to Night Stalker?

[Agent Iron]

Does anyone have any information on the differences between the Ranger RD series knives and the Night Stalker series? They look similar, but would love to here more info.

AI

 

[macgregor22]

Shouldn't be much any.
Justin designed the HT and the blade which is still 5160.
The night stalkers are recurve, alway a popular custom request when Justin was making them.