M50
Contents
Description
The Rifle, Multiple, 106-mm, Self-Propelled, M50, also known by the nickname Ontos, is a rank IV American tank destroyer
with a battle rating of 6.7 (AB/RB/SB). It was introduced in Update 1.71 "New E.R.A".
The M50 "Ontos" is pretty much a bulky carrier of recoilless rifles, carrying a payload of six shells of devastating HEAT and HESH shells. With six launchers pointing forwards, a well-emplaced M50 can point itself downrange and once a target comes into its sights, unleash all shells until the target is annihilated.
A stealthy and pouncing game style is needed to make the most of the hard-hitting guns and the thin armour of the Ontos.
General info
Survivability and armour
| Armour | Front (Slope angle) | Sides | Rear | Roof |
|---|---|---|---|---|
| Hull | 10-13 (70°) Front glacis 13 mm (45-66°) Lower glacis |
13 mm (43°) Top 13 mm Bottom |
13 mm (36°) Top 13 mm Bottom |
13 mm |
| Armour | Sides | Roof | ||
| Cupola | 13 mm | 13 mm |
Notes:
- Suspension wheels and torsion bars are 20 mm thick while tracks are 15 mm thick.
Mobility
| Game Mode | Max Speed (km/h) | Weight (tons) | Engine power (horsepower) | Power-to-weight ratio (hp/ton) | |||
|---|---|---|---|---|---|---|---|
| Forward | Reverse | Stock | Upgraded | Stock | Upgraded | ||
| Arcade | 53 | 18 | 8.3 | 206 | 277 | 24.82 | 33.37 |
| Realistic | 49 | 17 | 128 | 145 | 15.42 | 17.47 | |
Armaments
Main armament
| 106 mm M40A1C | |||||
|---|---|---|---|---|---|
| Capacity (Belt capacity) | Vertical guidance |
Horizontal guidance |
Stabilizer | ||
| 18 (6) | -10°/+20° | ±40° | N/A | ||
| Turret rotation speed (°/s) | |||||
| Mode | Stock | Upgraded | Prior + Full crew | Prior + Expert qualif. | Prior + Ace qualif. |
| Arcade | __.__ | __.__ | __.__ | __.__ | __.__ |
| Realistic | 10.7 | 12.6 | 15.3 | 16.9 | 18.0 |
| Reloading rate (seconds) | |||||
| Stock | Prior + Full crew | Prior + Expert qualif. | Prior + Ace qualif. | ||
| 16.90 | 14.95 | 13.78 | 13.00 | ||
Ammunition
| Penetration statistics | |||||||
|---|---|---|---|---|---|---|---|
| Ammunition | Type of warhead |
Penetration in mm @ 90° | |||||
| 10m | 100m | 500m | 1000m | 1500m | 2000m | ||
| M344A1 | HEAT | 381 | 381 | 381 | 381 | 381 | 381 |
| M361A1 | HESH | 152 | 152 | 152 | 152 | 152 | 152 |
| Shell details | ||||||||||
|---|---|---|---|---|---|---|---|---|---|---|
| Ammunition | Type of warhead |
Velocity in m/s |
Projectile Mass in kg |
Fuse delay
in m: |
Fuse sensitivity
in mm: |
Explosive Mass in g (TNT equivalent): |
Normalization At 30° from horizontal: |
Ricochet: | ||
| 0% | 50% | 100% | ||||||||
| M344A1 | HEAT | 502 | 10 | 0.0 | 0.1 | 1,650 | +0° | 62° | 69° | 73° |
| M361A1 | HESH | 498 | 10 | 0.4 | 0.1 | 5,040 | +0° | 73° | 77° | 80° |
Ammo racks
| Full ammo |
1st rack empty |
2nd rack empty |
Visual discrepancy |
|---|---|---|---|
| 18 | 10 (+8) | 0 (+18) | No |
Six shells are loaded per reload.
Machine guns
| 12.7 mm M8C | ||||||
|---|---|---|---|---|---|---|
| Coaxial mount (x4) | ||||||
| Capacity (Belt capacity each) | Fire rate (shots/minute) |
Vertical guidance |
Horizontal guidance | |||
| 480 (4) | 300 | N/A | N/A | |||
| 7.62 mm M1919A4 | ||||||
|---|---|---|---|---|---|---|
| Pintle mount | ||||||
| Capacity (Belt capacity) | Fire rate (shots/minute) |
Vertical guidance |
Horizontal guidance | |||
| 1,000 (250) | 500 | -5°/+50° | ±70° | |||
Usage in battles
Obviously the M50 is not a main battle tank, with its thin armor even Reserve units are a threat! Stealth and guile is the tactic, using its high mobility and small size to get in ambush or out flank an enemy push fast. Memorize shooting spots, be it concealed ambush points or sheltered ranged locations overlooking active routs. The most important tactic is learn how to operate it! Keymap a separate trigger for the spotting gun and learn the firing sequence! Nothing worse than sight a perfect target, but the gun on the wrong side is fired into a rock!
Modules
| Tier | Mobility | Protection | Firepower | ||
|---|---|---|---|---|---|
| I | Tracks | Parts | Horizontal Drive | ||
| II | Suspension | Brake System | FPE | Adjustment of Fire | Airstrike |
| III | Filters | Crew Replenishment | Elevation Mechanism | ||
| IV | Transmission | Engine | Improved optics | ||
Pros and cons
Pros:
- Six recoilless 106 mm rifles
- The guns can be fired within 0.5 seconds of each other, allowing rapid fire on one helpless target
- Stock shells of HEAT and HESH
- The HEAT shell is really effective, literally point and shoot
- Four heavy machine guns coaxial to guns - Can be used for spotting
- 33 mph/53 kph nice speed, can get to ambush or sniping positions early game or rush capture point
- Spotting Gun allow you to instantly adjust aim, improve accuracy.
Cons:
- No armour whatsoever (can be easily destroyed by heavy MG rounds or via air strafing)
- Only 18 rounds - can't miss and be wasteful
- Only 2 crew members - One shot is most likely to put you out of action
- Spotting machine guns are hard to utilize, firing only in unison with the guns as default or separately with key bindings
- Pintle mounted machine gun is quite ineffective against even aircraft found at this rank
- Use of Spotting Gun and main gun needs practice to be proficient and successful.
History
It was such a strange “tank” the only word the US Army could think of for this strange thing was, well, “Thing”, except someone was clever and used the Greek word, ὄντος (really, truly [exists]). Due mountainous and difficult terrain of Korea brought the US Army revisited the idea of a light tank. It was quite an ingenious design made very quickly. The prototype was based on an M56 Scorpion ATG chassis, used a common truck engine, and mounted six very powerful M40A1C recoilless rifle guns and be light enough for air transport. The prototype was finished in 1952 and by 1955 completed its testing where it fulfilled its design requirements, but the Army simply did not like this monstrosity and decided against it. The US Marines on the other hand was not as picky and loved this highly mobile light tank with a huge punch, so ordered 297 in 1955. The design was reworked with a new chassis, new running gear with wide thread (ditching the M56 design), better internal layout, and other minor improvements that made the Ontos a unique one off design. While it had a few flaws, it was reliable enough to accomplish its mission.
The key to the M50’s offensive power is the 106mm M40A1C recoilless rifle firing devastating HEAT or HESH rounds with its integrated M8C .50 cal spotting rifle using a 10 or 20 round magazine. It should be noted the M8C is a shorter round (12.7x77mm, Tracer Flash only) that the better known .50 AN/M2 BMG (12.7x99mm). Every M40 produced had the M8C, but on the M50 the lowest 2 barrels have this spotting rifle removed leaving an empty mounting post. If wanted (but not recommended) all 6 guns can be fired at once delivering far more destructive offensive load than any tank then or today. The nature recoilless rifles is a powerful blow back, during a test firing all 6 it knocked bricks out of a building and shatters a few car windows. At the top mounted a single .30 caliber M1919A4 machine gun for anti-infantry use.
The first combat use of the Ontos occurred in 1964 Dominican Republic Civil War where it reported destroyed an AMX-13 and an old Swedish L-60 (the only time it was used for purpose built, destroy tanks). But it was the following year when it was deployed to Vietnam .
Vietnam was extremely hostile to tanks, not due to enemies but the environment. Jungle, swamp, rice fields, mountains, rivers, a limited road network with small bridges; it was a nightmare for regular tanks but the Ontos could glide over them with ease. Enemy Vietnamese troops rarely used tanks and few anti-tank guns so there was little threat from them, the paper thin armor was more than enough to resist small arms and heavy MG fire. The significant vulnerability of reloading the 6 guns was largely moot as the fearsome reputation of this 6 shooter beast often cleared out enemy positions soon after it started shooting. Unfortunately its age was its greatest enemy. Over 10 years old and long out of production breakdowns became more frequent, some were cannibalized for parts and the turrets where mounted to fixed positions as point defense. Despite its unprecedented success in Vietnam its limited numbers, scattered deployment, breakdowns, and frequent rotation it did not gain as much fame as it could have. More of footnote today, this unusual tank was the perfect vehicle for very difficult conflict.
Media
Excellent additions to the article would be video guides, screenshots from the game, and photos.
See also
Links to the articles on the War Thunder Wiki that you think will be useful for the reader, for example:
- reference to the series of the vehicles;
- links to approximate analogues of other nations and research trees.
External links
| USA tank destroyers | |
|---|---|
| M10 | M10 GMC |
| M36 | M36 GMC · M36B2 |
| T95 | T28 · T95 |
| M109 | M109A1 |
| ATGM | LOSAT · M901 |
| Wheeled | M3 GMC · T55E1 |
| Other | M8 HMC · M50 · M56 |
| China | ▃LVT(A)(4) (ZIS-2) |
