Light Armored Vehicle, Mortar1-4

LAV-M: General
Date of first acceptance 1985 Total acceptances 60 by 2003
Manufacturer General Motors Canada Crew
5 men:
  • Commander in hull left front
  • Driver in hull left front
  • 3 mortar crewmen in hull right rear
LAV-M: Dimensions
Combat weight 26,720lbs
Height 84.3"
Length 251.6"
Width 98.4"
Tread Front: 85.8"
Rear: 86.8"
Front: 218cm
Rear: 220cm
Wheelbase Front to 2nd axle: 43.3"
Front to 3rd axle: 95.9"
Front to rear axle: 136.8"
Front to 2nd axle: 110cm
Front to 3rd axle: 244cm
Front to rear axle: 347.5cm
Ground clearance 14.9"
LAV-M: Armament
Type Mount Ammunition Traverse Elevation
81mm Mortar M252 Mount in hull center 90 rounds 360°
7.62mm M60 or M240E1 MG Flexible in pintle mount 1,000 rounds Manual Manual
Night vision
Image intensifying periscope for driver and commander
LAV-M: Armor
Rolled hard homogeneous steel
LAV-M: Automotive
Engine General Motors 6V53T; 6 cylinder, 2 cycle, vee, supercharged diesel
Horsepower Gross: 275@2,800rpm Torque Gross: 586 ft-lb@2,000rpm Fuel capacity 71gal
Transmission Allison MT653, 5 speeds forward, 1 reverse
Steering Steering wheel
Brakes Pneumatic-hydraulic
LAV-M: Suspension
Type Road wheels Shock absorbers
Front 2 axles: Independent coil spring
Rear 2 axles: Torsion bar
4/side On each wheel
LAV-M: Performance
Max level road speed 62mph
Max water speed 6.5mph
Max trench 68.4"
Max grade 60%
Max vertical obstacle 19.7"
Min turning diameter 50.8'
Max fording depth Floats Cruising range ~400mi, roads
~640km, roads

The LAV-M was the LAV-25 with its 25mm gun turret replaced by a mount for the 81mm mortar. A three-section folding cover was installed over the mortar to permit firing from the vehicle. The commander was moved to a cupola directly behind the driver, and the machine gun was mounted at the commander's station. The smoke grenade launchers were attached to the hull roof since there was no longer a turret. The mortar crew was provided with a bench along the right side of the fighting compartment, and mortar ammunition was stowed along the opposite side of the rear compartment. The fuel tank was relocated from under the rear floor in the LAV-25 to the left side of the rear compartment.

The LAV-M underwent upgrades to -A1 and -A2 standard like the LAV-25.




  1. Hunnicutt, R.P. Armored Car: A History of American Wheeled Combat Vehicles. Novato, CA: Presidio Press, 2002. Reprinted from Armored Car, R.P. Hunnicutt ©2002, available from Presidio Press, 505B San Martin Drive, Suite 160, Novato, CA 94945.
  2. D'Angina, James. LAV-25: The Marine Corps' Light Armored Vehicle. Botley, Oxford: Osprey Publishing, 2011.
  3. Estes, Kenneth W. Marines Under Armor. Annapolis, MD: Naval Institute Press, 2000.
  4. Hogg, Ian V. The Greenhill Armoured Fighting Vehicles Data Book. London: Greenhill Books, 2000.
Last updated 4 Feb 2018.
Questions? Comments? Corrections? Email me
© Copyright 2012-8 Chris Conners