View source for PG99-35-2 (35 mm)

== Description ==
<!-- ''Write an introduction to the article in 2-3 small paragraphs. Briefly tell us about the history of the development and combat using the weaponry and also about its features. Compile a list of air, ground, or naval vehicles that feature this weapon system in the game.'' -->
The '''35 mm PG99-35-2''' (PG99式35毫米防空炮) is a Chinese anti-aircraft gun. It is the domestic upgraded version based of the 35 mm Oerlikon KDA GDF-002.

=== Vehicles equipped with this weapon ===
<!-- ''List out vehicles that are equipped with the weapon.'' -->

* {{Specs-Link|cn_pgz_09}}

== General info ==
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The PG99-35-2 has a high muzzle velocity and high penetration thanks to the APDS rounds. Its rate of fire is adequate and identical to other SPAAGs equipped with a similar calibre.

=== Available ammunition ===
<!-- ''Describe the shells that are available for the weapon and their features and purpose. If it concerns autocannons or machine guns, write about different ammo belts and what is inside (which types of shells).'' -->

* '''Default:''' {{Annotation|API-T|Armour-piercing incendiary tracer}}{{-}}{{Annotation|HEI-T*|High-explosive incendiary tracer (self-destroying)}}
* '''DKG01A:''' {{Annotation|HEI-T*|High-explosive incendiary tracer (self-destroying)}}{{-}}{{Annotation|HEI-T*|High-explosive incendiary tracer (self-destroying)}}{{-}}{{Annotation|HEI-T*|High-explosive incendiary tracer (self-destroying)}}{{-}}{{Annotation|API-T|Armour-piercing incendiary tracer}}
* '''DKP01A:''' {{Annotation|API-T|Armour-piercing incendiary tracer}}{{-}}{{Annotation|API-T|Armour-piercing incendiary tracer}}{{-}}{{Annotation|API-T|Armour-piercing incendiary tracer}}{{-}}{{Annotation|HEI-T*|High-explosive incendiary tracer (self-destroying)}}
* '''DM23:''' {{Annotation|APDS|Armour-piercing discarding sabot}}{{-}}{{Annotation|APDS|Armour-piercing discarding sabot}}{{-}}{{Annotation|APDS|Armour-piercing discarding sabot}}{{-}}{{Annotation|APDS|Armour-piercing discarding sabot}}
<small>Note: the shells are identical to NATO counterparts.</small>

{| 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 || 68 || 65 || 52 || 40 || 30 || 23
|-
| DKG01A || 68 || 65 || 52 || 40 || 30 || 23
|-
| DKP01A || 68 || 65 || 52 || 40 || 30 || 23
|-
| DM23 || 127 || 125 || 119 || 111 || 104 || 97
|-
|}
{| class="wikitable sortable" style="text-align:center" width="100%"
! colspan="10" | Shell details
|-
! rowspan="2" data-sort-type="text" | Ammunition
! rowspan="2" | Type of<br>warhead
! rowspan="2" | Velocity<br>(m/s)
! rowspan="2" | Projectile<br>Mass (kg)
! rowspan="2" | Fuse delay<br>(m)
! rowspan="2" | Fuse sensitivity<br>(mm)
! rowspan="2" | Explosive Mass<br>(TNT equivalent) (g)
! colspan="3" | Ricochet
|-
! 0% !! 50% !! 100%
|-
| 35 mm HEI-T || HEI-T* || 1,175 || 0.55 || 0 || 0.1 || 204 || 79° || 80° || 81°
|-
| 35 mm API-T || API-T || 1,175 || 0.55 || 1.2 || 9 || 37.4 || 47° || 56° || 65°
|-
| 35 mm APDS || APDS || 1,400 || 0.38 || N/A || N/A || N/A || 75° || 78° || 80°
|-
|}

=== Comparison with analogues ===
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The PG99-35-2 shares the same design as the Swiss [[Oerlikon KDA (35 mm)|Oerlikon KDA]] cannon, which was licensed back in the late 1980s. Therefore, it has the same performance as the Oerlikon KDA.

Since the gun is based on [[Oerlikon KDA (35 mm)|Oerlikon KDA]] found on different NATO SPAAGs, they shared the same traits and the selection of ammunition is identical as well, thus having the same high velocity and penetration with APDS; while having a lower rate of fire than [[AZP-23 (23 mm)|AZP-23]], [[M163]] and [[Oerlikon KBA (25 mm)|Oerlikon KBA]] from the same company.

== Usage in battles ==
<!-- ''Describe the cannon/machine gun in the game - its distinctive features, tactics of usage against notable opponents. Please don't write a "guide" - do not impose a single point of view, but give the reader food for thought.'' -->
Since the gun is identical to any other 35 mm [[Oerlikon KDA (35 mm)|Oerlikon KDA]], its straight ballistics and high explosive mass from DKG01A means it can shoot down aircraft at its tiers and the penetration on DKP01A and DM23 is enough to gun down MBTs at similar tiers; PG99-35-2 however has a lower ammo count than his NATO counterparts so the overall firing time is shorter, it is not a good idea to be trigger-happy with PG99-35-2; the mere -2° depression angle can be embarrassing during close-quarter fights or complicated terrain.

=== Pros and cons ===
'''Pros:'''

* High explosive mass
* Sufficient rate of fire with straight ballistic
* APDS available for gunning down heavier targets

'''Cons:'''

* Lower ammo count than NATO counterparts
* Limited -2° depression angle

== History ==
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During the late 1980s, after attempts to make their own AA guns to replace the obsolete Soviet 37 mm, the PLA sought instead to purchase the renowned Swiss Oerlikon 35 mm GDF-002 cannon. In 1987, a deal was made and examples were imported along with the Skyguard system, and in 1990, China got a license for domestic production under the name PG90. When the later arms embargo in the 1990s stopped additional importation, Chinese-made domestic upgrades resulted in the PG99, which is said to be on-par with the GDF-003.

PG99-35-2 is usually seen as the field tow gun, while the later [[PGZ09]] gives this gun mobility and it serves as one of the cornerstone of close range air-defense network, gunning down aircraft with conventional shells or cruise missiles with AHEAD programmable shells.

== 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 article about the variant of the cannon/machine gun;''
* ''references to approximate analogues by other nations and research trees.''

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

{{China anti-aircraft guns}}

[[Category:Anti-aircraft guns]]