Boker Plus KAL 15 Linerlock knives BOP01KAL15 on sale now for $30.51. UPC code 788857035269. Closed: 4.75"; Blade: 3.5" l 440C Stainless l Partially Serrated Edge l Black Finish; Handle: Black l G10; Other Info: Extended Tang l Thumb Slot l Thumb Stud(s) l Thumb Ridge. grip is based on the shape of the piston and housing of the original Kalashnikov while the extended tang is in the shape of the magazine. Black nylon belt pouch. Boxed.