Type 99 cannon

thumb|right|400px|Top: Type 99 Mark 1 Model 3 - 20x72mmRB / Bottom: Type 99 Mark 2 Model 3 - 20x101mmRB
Not to be confused with the Type 99 light machine gun.
The Type 99 cannons are a pair of related Japanese aircraft cannons derived from the Oerlikon FF series; the Type 99 Mark 1 and Type 99 Mark 2 were developed from the smaller FF F and the mid-size FF L, respectively. They were the standard 20mm cannon of the Imperial Japanese Navy before and during World War II, mounted on many of their aircraft.
The two Type 99s being effectively the same weapon built at different scales, the guns also share development upgrades and sub-variant designations. The Type 99 Mark 1 Model 1 is virtually never mentioned, even in Japanese sources, but is generally assumed to be the original Oerlikon FF Fs imported for study; the Mark 2 did not have a Model 1 variant, instead starting with the production version. The Type 99 Mark 1 Model 2 and Type 99 Mark 2 Model 2 are the initial production versions, fed from 60-round drum magazines. The Type 99 Mark 1 Model 3 and Type 99 Mark 2 Model 3 were an upgrade to the Model 2 that swapped their compressed air cocking system for a hydraulic system, and they use 100-round drum magazines. The change in magazine is sometimes incorrectly stated to be the difference between the Model 2 and Model 3, however the larger drum was simply a parallel upgrade that came at almost the same time and is not actually related to the designation change; both models can technically use either drum.
The Type 99 Mark 1 Model 4 and Type 99 Mark 2 Model 4 were a significant change to the cannon, a redesign from drum magazines to belt-feed; the Model 4 was the final variant of the Mark 1, production ending in early 1945. The Type 99 Mark 2 Model 4 Kai ("kai" meaning upgraded/improved, a change that does not warrant a new designation) increased the gun's rate of fire by swapping to a stiffer recoil spring. The Type 99 Mark 2 Model 5, which further increased rate of fire, came too late to see full production or combat use, and was the last of the Type 99s.
The Type 99 Mark 1 also has a flexible mount variant, for defensive mounts in bombers and similar aircraft. As seen in its photo on this page, the flexible variant features substantial changes to make it usable in this role, such as a pistol grip and stock assembly, crank-style charging handle, ejection chute, a handguard, different muzzle device, and of course iron sights, as well as using smaller 45-round drum magazines.
===Film===
Title 	Actor 	Character 	Note 	Date
Japan's Longest Day	 	 	Mounted in A6M Zeroes 	1967
The Final Countdown	Soon-Tek Oh 	Japanese Zero pilot 	Acetylene mockup, mounted in SNJ Texan mocked up as A6M Zero	1980
The Final Countdown	 	Imperial Japanese Navy pilots	Acetylene mockup, mounted in SNJ Texan mocked up as A6M Zero	1980
Pearl Harbor 	 	Imperial Japanese Navy pilots	Mounted in A6M Zeroes 	2001
Unbroken 	 	Imperial Japanese pilots 	Mounted in A6M Zeroes 	2014
Godzilla Minus One 	Ryunosuke Kamiki	Kōichi Shikishima 	Mounted in A6M Zero 	2023
===Video Games===
Game Title 	Appears as	Mods	Notation 	Release Date
Medal of Honor: Rising Sun 	 	 	not usable, mounted in A6M Zero 	2003
Medal of Honor: Pacific Assault 	 	 	not usable, mounted in A6M Zero 	2004
Project Reality 	 	 	Mounted in crashed A6M Zero, unusable 	2005
The History Channel: Battle for the Pacific	 	 	mounted in A6M Zeros, unusable 	2007
Call of Duty: World at War 	 	 	not usable, mounted in A6M Zero 	2008
Battlefield 1943 	 	 	mounted in A6M Zero 	2009
Battlefield: Bad Company 2 	 	 	mounted in A6M Zeros 	2010
Men of War 	 	 	Mounted in A6M Zero 	2009
Project Reality: Vietnam 	 	 	Mounted in crashed A6M Zero, unusable 	2012
Far Cry 3 	 	 	not usable, mounted on crashed A6M Zero 	2012
Red Orchestra 2: Rising Storm 	 	 	not usable, mounted on crashed A6M Zero 	2013
Call of Duty: Black Ops III 	 	 	not usable, mounted in crashed A6M Zero 	2015
Battlefield V 	 	 	added with "War in the Pacific" (2019); mounted in A6M Zero	2018
Call of Duty: Vanguard 	 	 	not usable, mounted in A6M Zero fighters 	2021
Enlisted 	 	 	Type 99 Mark 1 cannon 	2021
Enlisted 	 	 	Type 99 Mark 2 cannon 	2021
===Anime===
Title 	Characters 	Notation 	Date
The Cockpit 	 	mounted in Mitsubishi A6M "Zero"; Ep. 2 	1993
801 T.T.S. Airbats 	 	mounted in Mitsubishi A6M "Zero" 	1994-1996
Lupin III: The Pursuit of Harimao's Treasure	 	mounted in Mitsubishi A6M "Zero" 	1995
Strike Witches 	Yoshika Miyafuji 	Type 99-2 Model 2 Kai, fictional rifle variant in 13.2x96mm Hotchkiss 	2008
Strike Witches 	Mio Sakamoto 	Type 99-2 Model 2 Kai, fictional rifle variant in 13.2x96mm Hotchkiss 	2008
Strike Witches 	Gertrud Barkhorn 	Type 99-2 Model 2 Kai, fictional rifle variant in 13.2x96mm Hotchkiss 	2008
Strike Witches 	Aleksandra Litvyak 	Type 99-2 Model 2 Kai, fictional rifle variant in 13.2x96mm Hotchkiss 	2008
Strike Witches 	Pierrette-Henriette Clostermann	Type 99-2 Model 2 Kai, fictional rifle variant in 13.2x96mm Hotchkiss 	2008
Strike Witches 2 	Yoshika Miyafuji 	Type 99-2 Model 2 Kai, fictional rifle variant in 13.2x96mm Hotchkiss 	2010
Strike Witches 2 	Mio Sakamoto 	Type 99-2 Model 2 Kai, fictional rifle variant in 13.2x96mm Hotchkiss 	2010
Strike Witches 2 	Junko Takei 	Type 99-2 Model 2 Kai, fictional rifle variant in 13.2x96mm Hotchkiss 	2010
Strike Witches 2 	 	Mark 1 flexible variants mounted in H8K flying boat 	2010
Strike Witches 2 	 	Mark 1s mounted in A6M fighters 	2010
Strike Witches: The Movie 	Shizuka Hattori 	Type 99-2 Model 2 Kai, fictional rifle variant in 13.2x96mm Hotchkiss 	2012
Strike Witches: The Movie 	Yoshika Miyafuji 	Type 99-2 Model 2 Kai, fictional rifle variant in 13.2x96mm Hotchkiss 	2012
Strike Witches: Operation Victory Arrow 	Yoshika Miyafuji 	Type 99-2 Model 2 Kai, fictional rifle variant in 13.2x96mm Hotchkiss 	2014-2015
Strike Witches: Operation Victory Arrow 	Mio Sakamoto 	Mark 1s mounted in A6M fighter 	2014-2015
In this Corner of the World 	 	mounted in Mitsubishi A6M "Zero" 	2016
Brave Witches 	Hikari Karibuchi 	Type 99-2 Model 2 Kai, fictional rifle variant in 13.2x96mm Hotchkiss 	2016-2017
Brave Witches 	Naoe Kanno 	Type 99-2 Model 2 Kai, fictional rifle variant in 13.2x96mm Hotchkiss 	2016-2017
Brave Witches 	Sadako Shimohara 	Type 99-2 Model 2 Kai, fictional rifle variant in 13.2x96mm Hotchkiss 	2016-2017
Brave Witches 	Takami Karibuchi 	Type 99-2 Model 2 Kai, fictional rifle variant in 13.2x96mm Hotchkiss 	2016-2017
Brave Witches 	Miya Misumi 	Type 99-2 Model 2 Kai, fictional rifle variant in 13.2x96mm Hotchkiss 	2016-2017
Brave Witches 	witch cadets 	Type 99-2 Model 2 Kai, fictional rifle variant in 13.2x96mm Hotchkiss 	2016-2017
Brave Witches 	 	Mark 1s mounted in A6M fighters 	2016-2017
The Magnificent Kotobuki 	 	mounted on "Kawanishi N1K1-j Shiden", "Aichi B7A", "Mitsubishi J2M RAIDEN", "D4Y2 Suisei", A6M3 Zero and "A6M Zero" planes	2019
Strike Witches: Road to Berlin 	Yoshika Miyafuji 	Type 99-2 Model 2 Kai, fictional rifle variant in 13.2x96mm Hotchkiss 	2020
Strike Witches: Road to Berlin 	Shizuka Hattori 	Type 99-2 Model 2 Kai, fictional rifle variant in 13.2x96mm Hotchkiss 	2020
Luminous Witches 	Yoshika Miyafuji 	Type 99-2 Model 2 Kai, fictional rifle variant in 13.2x96mm Hotchkiss 	2022
Category:Gun
Category:Cannon