# 8.8 cm KwK 36

The **8.8 cm KwK 36** was an 88 mm tank gun, caliber length L/56, mounted in the German Tiger I tank, and is often described as the 88 mm Flak gun in a turret.<sup>[2](https://panzerworld.com/8-8-cm-kw-k-36-l-56)</sup> Most references treat it as a purpose-built adaptation of the 8.8 cm Flak 36 with a redesigned breech and recoil system, though some classify it as a parallel development with very similar specifications.<sup>[7](https://www.historyrise.com/article/the-development-of-the-tiger-is-88mm-gun-and-its-battlefield-effectiveness/)</sup><sup> • </sup><sup>[8](https://cavac.at/cavacopedia/8.8%20cm%20Flak%2018%2F36%2F37%2F41)</sup> It was the first 88 mm gun mounted in a German armored fighting vehicle and gave the [Tiger I](https://www.edgepedia.org/tiger-i) the ability to destroy enemy tanks at ranges at which Allied guns could not reply.<sup>[1](https://www.army.mil/article/170583/armor_and_cavalry_restoration_facility)</sup> The gun fired 88×571R mm rounds whose cartridge cases were identical to those of the 8.8 cm Flak 18/36, but its electric primers differed from the percussion primers of the Flak guns, so complete rounds were not interchangeable, and it armed the Tiger I from the tank's introduction in 1942 through the end of its production.<sup>[3](https://porschecarshistory.com/wp-content/old/biblio/71/Tiger%20vol%202.pdf)</sup><sup> • </sup><sup>[17](https://www.oorlogsmuseum.nl/en/events/militracks/participating-vehicles/tiger-i/)</sup><sup> • </sup><sup>[13](https://www.8th-armored.org/assn/news/8ad-newsletter-v10-n04.pdf)</sup>

| Key fact | Detail |
|---|---|
| Type | 88 mm tank gun, caliber length L/56, barrel 4.928 m<sup>[2](https://panzerworld.com/8-8-cm-kw-k-36-l-56)</sup> |
| Ammunition | Electrically primed 88×571R mm rounds, shared case with the 8.8 cm Flak 18/36<sup>[3](https://porschecarshistory.com/wp-content/old/biblio/71/Tiger%20vol%202.pdf)</sup> |
| Best AP round | 8.8 cm Pzgr 39 APCBC-HE, 10.20 kg at 773 m/s, 120 mm penetration at 100 m and 83 mm at 2,000 m<sup>[2](https://panzerworld.com/8-8-cm-kw-k-36-l-56)</sup> |
| Rate of fire and barrel life | 10 rounds per minute; barrel life 6,000 rounds<sup>[2](https://panzerworld.com/8-8-cm-kw-k-36-l-56)</sup> |
| Mount limits | Maximum elevation +15°, minimum depression −8°<sup>[2](https://panzerworld.com/8-8-cm-kw-k-36-l-56)</sup> |
| Production cost | 18,000 Reichsmark, 2,500 man-hours, 6 months production time per gun<sup>[2](https://panzerworld.com/8-8-cm-kw-k-36-l-56)</sup> |

## Origins in the Flak 88

The gun's ancestry lies in Germany's interwar anti-aircraft program. After the [Treaty of Versailles](https://www.edgepedia.org/treaty-of-versailles) (1919) barred Germany from having an air force or anti-aircraft guns, the manufacturer Krupp sent its anti-aircraft gun designers to Sweden, where Krupp owned one third of the Swedish arms maker Bofors. The team designed an 88 that could fire a 9.4 kg shell and took the plans back to Germany in 1931; prototypes were built in secret, and general production began in 1933 under the deliberately backdated name 8.8 cm Flak 18, so that the gun would appear to predate the treaty.<sup>[4](https://ditsong.org.za/en/the-88cm-flak-37/)</sup> Later models were the Flak 36 and Flak 37.<sup>[4](https://ditsong.org.za/en/the-88cm-flak-37/)</sup>

The Flak 88 proved effective against ground targets as well as aircraft, first in the [Spanish Civil War](https://www.edgepedia.org/spanish-civil-war) and then against British armor in North Africa, where at the Battle of Sollum in June 1941 Flak 36s destroyed 123 of 238 attacking British tanks.<sup>[4](https://ditsong.org.za/en/the-88cm-flak-37/)</sup> This anti-tank record is what made an 88 mm tank gun attractive when Germany began designing a heavy tank.

## Selection for the Tiger I

The [German Army](https://www.edgepedia.org/german-army)'s heavy tank program passed through several abandoned designs. After combat analysis from France in 1940 showed that future battlefields would demand a more powerful gun and thicker armor, Henschel developed a 36-tonne vehicle named VK 36.01 (H) from mid-1941. Its intended armament, a 75 mm squeeze-bore gun, proved unsuccessful, and the tank was too small and light for the alternative 88 mm weapon, so Henschel abandoned the design after one hull.<sup>[5](https://tankmuseum.org/article/tiger-family/)</sup> Both Henschel and Porsche then designed to the larger VK 45.01 specification, which required a turret armed with an 88 mm gun built by Krupp. Henschel's VK 45.01 (H) won the contract and, with further development during 1942, became the Tiger I.<sup>[5](https://tankmuseum.org/article/tiger-family/)</sup> A mid-1941 decision to mount the new 8.8 cm KwK L/56 in the turret drove a further redesign of the Henschel vehicle.<sup>[6](https://api.pageplace.de/preview/DT0400.9781782002833_A26651271/preview-9781782002833_A26651271.pdf)</sup>

The tank-mounted version is frequently described simply as "the 88 mm Flak gun in a turret," and most references treat it as a purpose-built adaptation of the Flak 36 with a redesigned breech and recoil system to fit the Tiger's turret.<sup>[7](https://www.historyrise.com/article/the-development-of-the-tiger-is-88mm-gun-and-its-battlefield-effectiveness/)</sup> Some references nonetheless classify it as a parallel development with very similar specifications rather than a direct derivative of the Flak 36.<sup>[8](https://cavac.at/cavacopedia/8.8%20cm%20Flak%2018%2F36%2F37%2F41)</sup>

## Design and ammunition

The KwK 36 fired fixed 88×571R mm rounds with electric primers, using the same cartridge size as the 8.8 cm Flak 18/36 but with different priming mechanisms, making complete rounds not interchangeable.<sup>[3](https://porschecarshistory.com/wp-content/old/biblio/71/Tiger%20vol%202.pdf)</sup><sup> • </sup><sup>[13](https://www.8th-armored.org/assn/news/8ad-newsletter-v10-n04.pdf)</sup> The gun was about 17 feet long, of which 7 feet overhung the hull, and it was fitted with a double baffle muzzle brake.<sup>[9](https://www.military-references.com/wp-content/uploads/books/tanks/germany/panzer_vi_tiger_ausf_h1/Preliminary_Report_No_19_Pz_Kw_VI_Tiger_1943.pdf)</sup> A safety interlock prevented firing if the breech was not closed, the gun not fully run out, or the buffer not full.<sup>[9](https://www.military-references.com/wp-content/uploads/books/tanks/germany/panzer_vi_tiger_ausf_h1/Preliminary_Report_No_19_Pz_Kw_VI_Tiger_1943.pdf)</sup>

Three principal anti-armor rounds were available, alongside high-explosive ammunition:<sup>[2](https://panzerworld.com/8-8-cm-kw-k-36-l-56)</sup>

- **8.8 cm Pzgr 39** (APCBC-HE): 10.20 kg shot at 773 m/s, penetrating 120 mm at 100 m, 99 mm at 1,000 m, and 83 mm at 2,000 m. An improved-alloy version, the Pzgr. 39-1, was introduced for the Tiger I.<sup>[2](https://panzerworld.com/8-8-cm-kw-k-36-l-56)</sup><sup> • </sup><sup>[10](https://www.researchgate.net/publication/411013161_OSINT-based_analysis_of_weapon_components_optical_systems_ammunition_and_ballistic_performance_of_the_German_88_cm_FlaK_family)</sup>
- **8.8 cm Pzgr 40** (APCR): 7.30 kg shot at 930 m/s, penetrating 171 mm at 100 m and 110 mm at 2,000 m. Tungsten was scarce, so Pzgr 40 stocks were husbanded for the heaviest Soviet tanks and heavy tank destroyers.<sup>[2](https://panzerworld.com/8-8-cm-kw-k-36-l-56)</sup><sup> • </sup><sup>[3](https://porschecarshistory.com/wp-content/old/biblio/71/Tiger%20vol%202.pdf)</sup>
- **8.8 cm Gr 39 Hl** (HEAT): 7.65 kg at 600 m/s, a flat 90 mm penetration at all ranges.<sup>[2](https://panzerworld.com/8-8-cm-kw-k-36-l-56)</sup>

A standard Tiger I loadout paired 125 high-explosive rounds with 125 APCBC-HE rounds, plus HEAT.<sup>[11](https://panzerworld.com/german-ammunition-loadouts)</sup>

## Accuracy and combat performance

The gun's reputation rested on accuracy as much as penetration. German firing tables for the Pzgr 39 round give a 100 percent hit probability against a standard target at 100, 500, and 1,000 m under training conditions, falling to 87 percent at 2,000 m and 53 percent at 3,000 m; under combat conditions the same figures drop to 50 percent at 2,000 m and 19 percent at 3,000 m.<sup>[2](https://panzerworld.com/8-8-cm-kw-k-36-l-56)</sup> Dispersion data from the Panzerschießvorschrift show the Pzgr 39 round spreading only about 0.5 m in width and 0.9 m in height at 2,000 m.<sup>[12](https://panzerworld.com/german-gun-dispersion-and-accuracy)</sup> In British firing trials during the war, a British gunner scored five successive hits from 1,200 yards on a 16-by-18-inch target with the KwK 36.<sup>[13](https://www.8th-armored.org/assn/news/8ad-newsletter-v10-n04.pdf)</sup>

[The Tank Museum](https://www.edgepedia.org/the-tank-museum) summarizes the pairing of gun and armor that made the Tiger I a legend: the tank's 100 mm frontal armor made it impervious to Allied guns, while a shot from its 88 mm gun could penetrate 100 mm armor at ranges of up to 1,000 meters.<sup>[14](https://tankmuseum.org/tank-nuts/tank-collection/tiger-i)</sup>

## Relation to the KwK 43

The [Tiger II](https://www.edgepedia.org/tiger-ii)'s [8.8 cm KwK 43](https://www.edgepedia.org/8-8-cm-kwk-43) is often assumed to be an upgraded version of the KwK 36, but the two guns differ fundamentally in ammunition and barrel. The KwK 36 is an L/56 gun with a barrel of 88 × 56 = 4,928 mm firing 88 × 571 mm shells, whereas the KwK 43 is an L/71 weapon with a 6,248 mm barrel firing longer 88 × 822 mm rounds; the two ammunition types are physically incompatible.<sup>[16](https://tankmuseum.org/article/same-size-different-round/)</sup>

## Service

The KwK 36 armed the Tiger I from the tank's introduction in 1942 through the end of its production. Henschel in Kassel built 1,347 Tigers between August 1942 and August 1944,<sup>[17](https://www.oorlogsmuseum.nl/en/events/militracks/participating-vehicles/tiger-i/)</sup> though The Tank Museum gives the total as 1,354.<sup>[14](https://tankmuseum.org/tank-nuts/tank-collection/tiger-i)</sup> The gun's combination of range and accuracy shaped Allied tank development; the postwar British emphasis on firepower in the [Centurion](https://www.edgepedia.org/centurion) and Chieftain programs is traced to the shock of meeting the Tiger and its 88.<sup>[18](https://www.benning.army.mil/armor/eARMOR/content/issues/1985/JAN_FEB/ArmorJanuaryFebruary1985web.pdf)</sup>

## References

1. [Armor and Cavalry Restoration Facility, U.S. Army](https://www.army.mil/article/170583/armor_and_cavalry_restoration_facility)
2. [8,8 cm Kw K 36 (L/56), Panzerworld](https://panzerworld.com/8-8-cm-kw-k-36-l-56)
3. [Tiger vol. 2 (Jentz), via porschecarshistory.com](https://porschecarshistory.com/wp-content/old/biblio/71/Tiger%20vol%202.pdf)
4. [The 8,8cm Flak 37, DITSONG Museums of South Africa](https://ditsong.org.za/en/the-88cm-flak-37/)
5. [The Tiger Family Part I – To the Tiger I, The Tank Museum](https://tankmuseum.org/article/tiger-family/)
6. [Germany's Tiger Tanks preview (GNM), via pageplace.de](https://api.pageplace.de/preview/DT0400.9781782002833_A26651271/preview-9781782002833_A26651271.pdf)
7. [The Development of the Tiger I's 88mm Gun, History Rise](https://www.historyrise.com/article/the-development-of-the-tiger-is-88mm-gun-and-its-battlefield-effectiveness/)
8. [8.8 cm Flak 18/36/37/41, CAVAC opedia](https://cavac.at/cavacopedia/8.8%20cm%20Flak%2018%2F36%2F37%2F41)
9. [STT Preliminary Report No. 19: PzKw VI (Tiger), 1943](https://www.military-references.com/wp-content/uploads/books/tanks/germany/panzer_vi_tiger_ausf_h1/Preliminary_Report_No_19_Pz_Kw_VI_Tiger_1943.pdf)
10. [OSINT-based analysis of the German 8.8 cm FlaK family, ResearchGate](https://www.researchgate.net/publication/411013161_OSINT-based_analysis_of_weapon_components_optical_systems_ammunition_and_ballistic_performance_of_the_German_88_cm_FlaK_family)
11. [German Ammunition Loadouts, Panzerworld](https://panzerworld.com/german-ammunition-loadouts)
12. [German Gun Dispersion and Accuracy, Panzerworld](https://panzerworld.com/german-gun-dispersion-and-accuracy)
13. ['Thundering Herd', 8th Armored Association newsletter](https://www.8th-armored.org/assn/news/8ad-newsletter-v10-n04.pdf)
14. [Tiger I – Tiger 131, The Tank Museum](https://tankmuseum.org/tank-nuts/tank-collection/tiger-i)
15. [Military Despatches Vol. 35, May 2020](https://www.militarydespatches.co.za/Vol%2035%20May%202020.pdf)
16. [What the L, The Tank Museum](https://tankmuseum.org/article/same-size-different-round/)
17. [Tiger I Sd.Kfz. 181, Oorlogsmuseum Overloon](https://www.oorlogsmuseum.nl/en/events/militracks/participating-vehicles/tiger-i/)
18. [Armor, January–February 1985, U.S. Army Armor School](https://www.benning.army.mil/armor/eARMOR/content/issues/1985/JAN_FEB/ArmorJanuaryFebruary1985web.pdf)

---
*Topic: Encyclopedia › Technology and the built world › Engineering and manufacturing › Tanks and armored fighting vehicles › Tank guns, armor, and design technology*

*Initially written Sep 17, 2026 · Reviewed: Oct 15, 2026 · Edited: Oct 15, 2026; Oct 25, 2026 · Last review: Oct 15, 2026*

*Copyright 2026 EdgeChat AI, a subsidiary of Biostate AI.*

License: Edgepedia Community License 1.0, https://www.edgepedia.org/edgepedia/license