Mars Artillery Type 11B; KN-24 under United States’s naming convention)[6] is a North Korean single-stage, solid-fueled tactical ballistic missile.

The Hwasong-11B bears an external resemblance to the American MGM-140 ATACMS and likely fills a similar role of supporting battlefield operations.

It flies in a "variable ballistic trajectory," flattening out at a lower altitude, below around 50 km (31 mi), than traditional SRBMs like the Scud, where the atmosphere is dense enough, so the missile's fins can maintain aerodynamic control over its entire flight and dive toward the target.

Although the missile is outwardly similar to the ATACMS, it has demonstrated greater range, suggesting its physical dimensions are larger.

It appears to share a common booster with the Hwasong-11A (KN-23) and is estimated to carry a 400–500 kg (880–1,100 lb) payload with a unitary or submunition warhead.