The missiles are designated according to the warhead they carry. The 9M79B is fitted with a "special" (chemical or nuclear) warhead; the 9M79F has a high-explosive fragmentation warhead; and the 9M79K delivers submunitions.
Scarab B
Variant with the ability to traverse depressed trajectories. Also can execute pre-programmed maneuvers up to 10 g during terminal phase of flight. Its accuracy has been measured at 311.6 ft (95 m) circular error probability (CEP).
Scarab C
Flight trials were reported in 1989. Utilizes a smaller missile (approximately 3,968.3 lb; 1,800 kg launch weight) and a redesigned, larger TEL vehicle with two missiles mounted next to each other. A previously reported range of 606.9 ft (185 m) is now thought to be inaccurate.
KN-02
Improved version of the SS-21. Solid-fuel rocket engine with a range up to 74.5 mi (120 km).
Data published after inspection of former East German missiles indicated a maximum range of 38 nm (43.5 mi, 70 km). Earlier estimates ranged up to 65 nm (75 mi, 120 km).
