81MM Mortar, All Types

The 81MM Mortar, All Types program is dedicated to procuring various types of 81mm mortar ammunition for the Army. Its primary goal is to support training and combat operations by ensuring a steady supply of mortar cartridges compatible with the M252 Mortar Weapon System. This system is used by Stryker Brigade Combat Teams and light infantry battalions, including Airborne, Air Assault, and Ranger units. The program aims to enhance operational readiness and maintain a robust inventory for war reserve purposes.

A key focus of this program is acquiring High Explosive (HE) cartridges, such as the M821A2 and M889A4 series. These cartridges are designed with Insensitive Munitions (IM) features to reduce vulnerability to unplanned stimuli like fire, heat, shock, and impact. The M821A2 cartridge includes an electronic countermeasure-resistant multi-option fuze that optimizes lethality when set in proximity mode. The M889A4 series is primarily used for training due to its cost-effectiveness but remains lethal for combat scenarios.

The program also involves procuring illumination cartridges like the M853A1 Visible Light Illumination and M816 Infrared Illumination series. These cartridges provide essential capabilities for night operations by illuminating targets at extended ranges. The visible light version aids in monitoring enemy activities and adjusting fire during combined operations with allies lacking night vision devices. In contrast, the infrared version minimizes visible light exposure to maintain covert operations while allowing adjustments using passive night vision devices.

Additionally, the program supports training through acquiring full-range training rounds (FRTR) such as the M879 series with practice fuzes. These rounds offer realistic training experiences at reduced costs compared to standard HE rounds. By maintaining a balance between operational readiness and cost-efficiency, this program ensures that Army units are well-prepared for both training exercises and real-world combat scenarios.