Mission:
The 120-mm mortar is the US Army's heavy mortar. It is used to provide high-angle fire for ground troop support.

Description:
The M121 Carrier Mounted Mortar System consists of the M298 Cannon, M9 baseplate (for ground mount mode), M191 bipod, an adaptor kit for mounting in the M1064A3, and the M67 sight unit with an extension assembly. The turntable provides a ninety degree area of fire. The adaptation kit has a breech piece socket, bipod support, travel clamp assembly, step assembly, and brackets to mount the mortar into the M1064A3. The M121 has also been qualified for use in the AMPV mortar carrier.

Both 120mm mortar system configurations use graphic scales, M16 and M19 plotting boards, and firing tables. The system is compatible with the M2 aiming circle, M45 series boresight equipment, M14 aiming posts, and the M58/59 aiming post lights. The M95/M96 Mortar Fire Control System is currently being fielded which vastly improves all fire control aspects of the system.

Specifications:

Weight

• 717lbs with trailer/318 lbs in firing position

Elevation

• Minimum 710 mils, Maximum 1510 mils

Range

• Minimum 200 meters, Maximum 7,200 meters

Deflection

• 136 mils Right or left of center