12k11

12k11 is a designation that refers to a specific variant of the K11 rifle, a select-fire assault rifle developed by the Republic of Korea's Agency for Defense Development (ADD). The K11 is a multi-shot grenade launcher system that incorporates a 5.56x45mm NATO rifle and a 20mm airbursting grenade launcher. The 12k11 variant specifically denotes improvements and modifications made to the original K11 design, though the exact nature of these modifications can be proprietary and subject to military specifications.

The primary innovation of the K11 system is its ability to fire both standard rifle rounds and 20mm grenades, with the latter featuring programmable airburst capabilities. This allows the weapon to engage targets behind cover by detonating the grenade at a predetermined point in its trajectory. The rifle component utilizes a gas-operated, rotating bolt system, common in many modern assault rifles. The integrated fire control system is a key feature, enabling the precise aiming and detonation of the 20mm rounds.

The development of the K11 was driven by the need for a more versatile and effective weapon system for South Korean special forces and other elite units. While the system offers advanced capabilities, its introduction and widespread adoption have faced challenges related to cost, complexity, and operational reliability. Nonetheless, the 12k11 variant represents an ongoing effort to refine and enhance this unique weapon platform.