{{About
| about = SPAA '''{{PAGENAME}}'''
| usage = the American variant
| link = M19A1
}}
{{Specs-Card
|code=jp_m19
|images={{Specs-Card-Image|GarageImage_{{PAGENAME}}.jpg|ArtImage_{{PAGENAME}}.png}}
}}

== Description ==

The '''{{Specs|name}}''' is a rank {{Specs|rank}} Japanese SPAA {{Battle-rating}}. It was introduced in [[Update "Direct Hit"]].

== General info ==
=== Survivability and armour ===
{{Specs-Tank-Armour}}

'''Armour type:'''

* Rolled homogeneous armour (hull, turret)

{| class="wikitable"
|-
! Armour !! Front (Slope angle) !! Sides !! Rear !! Roof
|-
| Hull || 12.7 mm (59°) ''Upper glacis'' 12.7 mm (45°) ''Lower glacis'' || 12.7 mm (11°) || 12.7 mm || 12.7 mm
|-
| Turret || 12.7 mm (cylindrical) ''Gun shield - lower part'' 12.7 mm (spherical) ''Gun shield - upper part'' || 8 mm (cylindrical) 8 + 12.7 mm (cylindrical) ''Turret base'' || 8 mm (cylindrical) 8 + 12.7 mm (cylindrical) ''Turret base''
!
|-
|}

'''Notes:'''

* Suspension wheels are 10 mm thick while tracks are 15 mm thick.

The {{PAGENAME}} is so lightly armoured that it is very vulnerable to nearby ammorack detonations, bomb blasts and even heavy MG fire can reliably penetrate the vehicle from beyond 1,000 m.
As the {{PAGENAME}} has an open-topped turret, gun servants are also very exposed to MG fire, artillery strikes and plane strafings.

=== Mobility ===
{{Specs-Tank-Mobility}}


{{tankMobility|abMinHp= 420|rbMinHp= 262}}

=== Modifications and economy ===
{{Specs-Economy}}

== Armaments ==
{{Specs-Tank-Armaments}}
=== Main armament ===
{{Specs-Tank-Weapon|1}}

{{main|Dual Automatic Gun M2 (40 mm)}}

{| class="wikitable" style="text-align:center" width="100%"
|-
! colspan="6" | [[Dual Automatic Gun M2 (40 mm)|40 mm Dual Automatic Gun M2]] (x2) || colspan="5" | Turret rotation speed (°/s) || colspan="4" | Reloading rate (seconds)
|-
! Mode !! Capacity (Belt) !! Fire rate !! Vertical !! Horizontal !! Stabilizer
! Stock !! Upgraded !! Full !! Expert !! Aced
! Stock !! Full !! Expert !! Aced
|-
! ''Arcade''
| rowspan="2" | 352 (8) || rowspan="2" | 120 || rowspan="2" | -5°/+85° || rowspan="2" | ±180° || rowspan="2" | N/A || 35.2 || 48.8 || 59.2 || 65.5 || 69.7 || rowspan="2" | 0.65 || rowspan="2" | 0.58 || rowspan="2" | 0.53 || rowspan="2" | 0.50
|-
! ''Realistic''
| 23.8 || 28.0 || 34.0 || 37.6 || 40.0
|-
|}

==== Ammunition ====

* '''Default:''' {{Annotation|AP-T|Armour-piercing tracer}}{{-}}{{Annotation|FI-T*|Fragmentation incendiary tracer (self-destroying)}}
* '''Mk.II:''' {{Annotation|FI-T*|Fragmentation incendiary tracer (self-destroying)}}
* '''M81A1:''' {{Annotation|AP-T|Armour-piercing tracer}}

{| class="wikitable sortable" style="text-align:center" width="100%"
! colspan="7" | Penetration statistics
|-
! rowspan="2" data-sort-type="text" | Belt
! colspan="6" | Penetration @ 0° Angle of Attack (mm)
|-
! 10 m !! 100 m !! 500 m !! 1,000 m !! 1,500 m !! 2,000 m
|-
| Default || 72 || 69 || 58 || 47 || 38 || 30
|-
| Mk.II || 3 || 3 || 3 || 3 || 3 || 3
|-
| M81A1 || 72 || 69 || 58 || 47 || 38 || 30
|-
|}
{| class="wikitable sortable" style="text-align:center" width="100%"
! colspan="10" | Belt details
|-
! rowspan="2" data-sort-type="text" | Belt
! rowspan="2" | Type of warhead
! rowspan="2" | Velocity (m/s)
! rowspan="2" | Projectile Mass (kg)
! rowspan="2" | Fuse delay (m)
! rowspan="2" | Fuse sensitivity (mm)
! rowspan="2" | Explosive Mass (TNT equivalent) (g)
! colspan="3" | Ricochet
|-
! 0% !! 50% !! 100%
|-
| Mk.II || FI-T* || 874 || 0.86 || 0 || 0.1 || 63 || 79° || 80° || 81°
|-
| M81A1 || AP-T || 874 || 0.88 || N/A || N/A || N/A || 47° || 60° || 65°
|-
|}

==== [[Ammo racks]] ====

{| class="wikitable" style="text-align:center"
|-
! Full ammo
! 1st rack empty
! 2nd rack empty
! 3rd rack empty
! 4th rack empty
! 5th rack empty
! 6th rack empty
! 7th rack empty
! 8th rack empty
! 9th rack empty
! 10th rack empty
! 11th rack empty
! 12th rack empty
! 13th rack empty
! Visual discrepancy
|-
| '''44''' || 22 ''(+22)'' || 20 ''(+24)'' || 18 ''(+26)'' || 17 ''(+27)'' || 15 ''(+29)'' || 13 ''(+31)'' || 12 ''(+32)'' || 10 ''(+34)'' || 8 ''(+36)'' || 7 ''(+37)'' || 5 ''(+39)'' || 3 ''(+41)'' || 2 ''(+42)'' || Yes
|-
|}
[[File:Ammoracks_M19.png|right|thumb|x250px|[[Ammo racks]] of the {{PAGENAME}}]]
'''Notes''':

* The visual discrepancy concerns racks and clips: racks are modelled to contain 5 clips while clips are modelled to contain 5 rounds.
* The game however shoots 8 rounds per clip and racks disappear after varying amounts of rounds have been shot. Example: Racks 2 to 13 are the same size (25 rounds) but some disappear after 2 clips were fired (16 rounds), some others disappear only after 1 clip (8 rounds) has been fired.
* No rack is emptied before you have fired 21 clips out of 44.

== Usage in battles ==

''Describe the tactics of playing in the vehicle, the features of using vehicles in the team and advice on tactics. Refrain from creating a "guide" - do not impose a single point of view but instead give the reader food for thought. Describe the most dangerous enemies and give recommendations on fighting them. If necessary, note the specifics of the game in different modes (AB, RB, SB).''

=== Pros and cons ===

''Summarise and briefly evaluate the vehicle in terms of its characteristics and combat effectiveness. Mark its pros and cons in a bulleted list. Try not to use more than 6 points for each of the characteristics. Avoid using categorical definitions such as "bad", "good" and the like - use substitutions with softer forms such as "inadequate" and "effective".''

'''Pros:'''

* Heavy anti-air firepower
* Powerful 40 mm HE shells, can decimate/critically damage aircraft
* Reloads in 0.6 seconds
* Good mobility

*

'''Cons:'''

* Open top, exposing loaders and gunners
* Compared to other SPAA at the same rank, poor anti-vehicle performance
* Little armour
* Decreased mobility off-road
* Exposed ammo rack

*

== History ==

''Describe the history of the creation and combat usage of the vehicle in more detail than in the introduction. If the historical reference turns out to be too long, take it to a separate article, taking a link to the article about the vehicle and adding a block "/History" (example: <nowiki>https://wiki.warthunder.com/(Vehicle-name)/History</nowiki>) and add a link to it here using the <code>main</code> template. Be sure to reference text and sources by using <code><nowiki><ref></ref></nowiki></code>, as well as adding them at the end of the article with <code><nowiki><references /></nowiki></code>. This section may also include the vehicle's dev blog entry (if applicable) and the in-game encyclopedia description (under <code><nowiki>=== In-game description ===</nowiki></code>, also if applicable).''

== 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 ==

''Paste links to sources and external resources, such as:''

* ''topic on the official game forum;''
* ''other literature.''

{{Japan anti-aircraft vehicles}}