M121 120mm Carrier-Mounted Mortar System
The M121 Mortar System is mounted in the M1064 Armored Personnel Carrier (M113 family of vehicles) and consists of the following major components:
- M298 Cannon Assembly (110 lbs)
- M191 Bipod Assembly (70 lbs)
- M9 Baseplate (136 lbs)
- Carrier Adaption Kit
The M121 Mortar replaces the M30 4.2 Inch Mortar in mechanized infantry and armor units. With the use of an auxiliary M9 Baseplate and extension feet for the M191 Bipod, the M121 can be dismounted from the vehicle and emplaced for ground-mounted operation. When firing in the carrier-mounted mode, a Blast Attenuation Device (BAD) is attached to the muzzle of the M298 cannon to reduce the blast effects on the mortar crew. Ammunition racks installed in the M1064 can accomodate 69 rounds of 120mm mortar ammunition.
Significant Facts & Characteristics
Maximum Range..........7200 meters
This is the old max at CHG 4, which at this time, causes premature detonation, i.e. in the tube. I got this from a computer in a MI N.G. Mech INF Bn.
Minimum Range..........200 meters
Maximum Rate of Fire.........16 rounds/min (first minute)
Sustained Rate of Fire..........4 rounds/min
| TC-LRP | TC-STD | Conditional
Materiel Release
| Full
Materiel Release | First Unit
Equipped |
| April 1990
| October 1991
| April 1995
|
| May 1995 |
M121 NSN: 1015-01-292-3801
M298 NSN: 1015-01-289-5279
M9 NSN: 1015-01-285-7417
M1064 NSN: 2350-01-388-3116
Main Index
Mortar Equipment Index
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M224 60-mm Mortar Page
M252 81-mm Mortar Page
M120 120-mm Mortar, Towed System Page