- U.S. 81mm Mortar, M1 -
World War II, Korean War, Vietnam War

M1

The Kit:

   

This is the Italeri kit in 1/35 scale and is molded in styrene plastic.

       
M1

The Details:

   

Items added to this model were the tension spring and chain to the bipod legs and the elevation handle fashioned from bent wire. The weapon's sight unit is from the spares box and I believe that it is also an Italeri item.

       
M1

The Extras:

   

The M1 Carbine and backpack are from Tamiya. I added the 2-magazine pouch to the stock of the rifle. The rifle sling and mounting 'hardware' were also added.

       
M1

Painting, Weathering and Finishing:

Acrylic Paints and flat coat were used throughout. Artist oils thinned with an odorless brush cleaner and thinner were used for the washes.

       

Base and Groundwork:

This base is pine wood and cut to 3-1/2 inches in diameter, stained and sealed with multiple coats of polyurethane. Sculptamold was used for the initial ground cover. A couple of stones were pressed in and the bushes are dried-flowers. Static grass was applied, and I used baby powder, white glued in place for the snow.


General Mortar Info:

   

In the self-propelled mode, the M1 81mm Mortar was transported by the M4, M4A1 and M21 Half-Tracked Mortar Carriers. These vehicles enabled the mortar to also be fired from within a semi armored vehicle, offering crew protection from small arms fire and shell fragments as well as mobility.


Actual Mortar Data:

Weight: Tube: 44.5lbs, Bipod: 46.5lbs, Baseplate: 45lbs (Total weight: 136lbs)

Overall Length: 3ft, 9.5in

Muzzle Velocity (HE): 700 feet per second

Rate of Fire: 18 rounds per minute (normal), 30-35rpm maximum
Maximum Range (HE): 3,290 yards

Ammunition:
M43A1 Light HE: Weight: 6.87lbs, Min Range: 200yds, Max Range: 3,290yds
M45, M45B1 Heavy HE: Weight: 10.62lbs, Max Range: 1,300yds
M56 Heavy HE: Weight: 15.01lbs, Max Range: 1,300yds
M57 WP (White Phosphorus): Weight: 10.74lbs, Max Range: 2,470yds
M57 FS (Smoke): Weight: 10.74lbs, Max Range: 2,470yds
M301 Illumination Round: Max Range: 2,200yds
      Illumination Area: Approx 150yds (when attached to parachute).
      Illumination: 275,000 candlepower for approx 60 seconds.

FM 23-90-May42 FM 23-90(1943).jpg (17567 bytes) ORD 7 SNL A-33 FM23-90 Apr1951 FM 23-90-58
FM 23-90 FM 23-90 ORD 7 SNL A-33 FM 23-90 FM 23-90

Sources:
Weapons of the Korean War

Mr. David Albert - United States

Mr. Rob Bloemhard - The Netherlands

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Mortars in Miniature, Created and Maintained by
Kevin Robert Keefe, Copyright © 2012
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