Forward view of M50 Ontos on the move in Vietnam in 1968.
Source: US Marine Corps -
© Public domain
1955 - 1957
M50 production run
1963 - 1965
M50A1 upgrade program
297 M50 produced
176 converted to M50A1
Rifle, Multiple 106 mm, Self-propelled, M50
Official US military service designation
3 (driver, gunner, loader)
6x 106mm M40A1C recoilless rifle
4x 12.7mm M8C spotting rifle
18 rounds, 6 ready to fire
40° over frontal arc
.30-06 Browning M1919A4 machine gun
M50: General Motors Model 302 6-cylinder gasoline engine, 145 hp
M50A1: Chrysler HT-361-318 8-cylinder gasoline engine, 180 hp
13 mm all around
The Ontos is armed with six M40A1C recoilless rifles.
A .30 caliber M1919A4 machine gun is mounted as a flexible weapon for self-defense.
The Japanese Type 60 is a contemporary design. This has two 106mm M40 recoilless rifles in a raiseable mount.
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