20mm Oerlikon KAA

     Notes:  The KAA is found on a variety of vehicular and ground mounts, including the GAI-D01, GAI-C01, and GAI C04 antiaircraft guns.  It is also known as the Hispano-Suiza Type 204 GK.  It is gas-operated.  Based on the World War 2 Hispano-Suiza Type S autocannon (primarily an AAA gun), the KAA was designed in the 1950s, but did not really take off until after the Falklands war after the Royal Navy found their GAM-B01 autocannons were inadequate as close-in AAA guns.  Before this, some naval vessels and light AFVs used the KAA, though it is primarily designed for use as a AAA gun.  The KAA is electrically-fired and requires a power source, though the Spanish Meroka variant uses a percussion-primed recoil system requiring no power source.  The KAA is light and handy.

     The KAB is a gas-operated version suitable for antiaircraft and ground target applications.  The gun may be fed from one of several magazines or drums.  It is fitted with a very efficient muzzle brake, with a longer barrel.  The KAB may be field-stripped without tools. 

     The GAI-B01 variant is one of the smallest, lightest, and simplest mounted antiaircraft cannons in existence.  This is in no small order related to its being built around the KAB autocannon.  It is normally towed on a light trailer by a vehicle, but can be mounted in its entirety on a heavier vehicle, or even manpacked in up to 10 loads plus ammunition.  The elevation is done with a handwheel, and traverse with pumping pedals.  The mount includes a 1x sight for antiaircraft use, and a 3.7x sight for ground targets. 

Weapon

Ammunition

Crew

Set Up Time

Weight

Price

KAA

20mm KAA

1

NA

87 kg

$7000

KAB

20mm KAA

1

3 Minutes

109 kg

$7210

GAI-B01

20mm KAA

2

20 Seconds

547 kg

$29401

 

Weapon

ROF

Magazine

Range

Round

Damage

Penetration

Oerlikon KAA

10

100B

540

API

4

3/3/3/2

 

10

100B

400

HE

C1  B5

-4C

Oerlikon KAB

10

8, 20, 50

710

API

4

3/3/3/2

 

10

8, 20, 50

530

HE

C1  B5

-4C

GAI-B01

10

8, 20, 50

710

API

4

3/3/3/2

 

10

8, 20, 50

530

HE

C1  B5

-4C

 

20mm Oerlikon GAI-C01/GAI-C04

     Notes:  These weapons are both based around Oerlikon KAD autocannons (also known as HS-820 autocannons).  The GAI-C01 uses one belt of ammunition that feeds from the right side, while the GAI-C04 uses a slightly different version that uses a dual feed mechanism.  They can be used against aircraft and ground targets.  The elevation and traverse are manual with a handcrank and pumping pedals.  The sights are x1 for antiaircraft use and 2.5x for ground targets.  Each ammunition box contains 75 rounds of belted ammunition. The KAD suffers from a high rate of fire and in some applications struggles against the limitations of small magazines and belts; it was primarily designed as an aircraft cannon and not a ground-mounted cannon.

Weapon

Ammunition

Crew

Set Up Time

Weight

Price

GAI-C01

20mm KAD

3

2 Minutes

512 kg

$30531

GAI-C04

20mm KAD

4

2 Minutes

535 kg

$30610

 

Weapon

ROF

Magazine

Range

Round

Damage

Penetration

GAI-C01

10

75 Belt

590

APDS

4

6/5/4/3

 

10

75 Belt

590

API

4

3/3/3/2

 

10

75 Belt

440

APHEI

C1  B5

17C

 

10

75 Belt

440

HEI

C1  B5

-4C

 

10

75 Belt

440

SHRAP

C1  B8

-5C

GAI-C04

10

75 Belt (x2)

590

APDS

4

6/5/4/3

 

10

75 Belt (x2)

590

API

4

3/3/3/2

 

10

75 Belt

440

APHEI

C1  B5

17C

 

10

75 Belt (x2)

440

HEI

C1  B5

-4C

 

10

75 Belt (x2)

440

SHRAP

C1  B8

-5C

 

20mm GAI-C03

     Notes:  This is basically a GAI-C01 that uses a variant of the KAD known as the KAD-A01.  The biggest difference between the standard KAD and the KAD-A01, apart from the barrel length, is that the KAD-A01 is fed from drum magazines similar to those of KAB.  The GAI-C03 uses the same carriage, mount, and sight of the GAI-C01.

Weapon

Ammunition

Crew

Set Up Time

Weight

Price

GAI-C03

20mm KAD

3

2 Minutes

495 kg

$31061

 

Weapon

ROF

Magazine

Range

Round

Damage

Penetration

GAI-C01

10

8, 20, 50

670

APDS

4

6/5/4/3

 

10

8, 20, 50

670

API

4

3/3/3/2

 

10

8, 20, 50

500

HE

C1  B5

-4C

 

10

8, 20, 50

500

SHRAP

C1  B8

-5C

 

20mm GAI-D01

     Notes:  This weapon was designed to fill the gap between simple single-barreled 20mm antiaircraft guns and heavy, sophisticated weapons such as the 35mm GDF series.  It has twin barrels that are longer than the standard KAA or KAB barrels. It is also meant to be economical enough to be used routinely against ground targets, especially personnel in the open.  The GAI-D01 is a fairly simple weapon, but has powerful 6x telescopic sights and a small 1.5 kW generator under the gunner’s seat for the gun training and rotation mechanism.

Weapon

Ammunition

Crew

Set Up Time

Weight

Price

GAI-D01

20mm KAA

5

1 Minutes

1800 kg

$56472

 

Weapon

ROF

Magazine

Range

Round

Damage

Penetration

GAI-D01

20

120 Belt (x2)

590

API

4

3/3/3/2

 

20

120 Belt (x2)

440

HE

C1  B5

-4C

 

25mm Oerlikon KBA

     Notes:  The design of the KBA dates back to the 1960s and the competition for what would become the autocannon on the US MICV (later the M-2 Bradley). The KBA was actually designed by famed small arms maven Eugene Stoner, but the design was bought out by Oerlikon after the MICV autocannon competition was won by the M-242 Bushmaster. The KBA is used in a large amount of vehicles, including the AIFV, MOWAG Piranha, Diana ADA, and Oerlikon GBI-A01, as well as the GBD-AOA and GBD-COA turrets.  It is a gas-operated, dual-feed weapon; the KBA-A fires on automatic only; the KBA-B is selective fire, with semiautomatic, programmable rapid semiautomatic with a cyclic rate of 200 RPM, and fully automatic.  The standard automatic cyclic rate of fire is 570 RPM, but the KBA-C01 version uses a recoiling barrel and has a slightly higher rate of fire at 600 RPM (this has no effect in game terms). The operation of the autocannon is primarily electrical, though as backups hand cranks and a trigger pedal are available (the electrical firing mechanism actually “pulls the trigger” instead of electrically firing the ammunition).

Weapon

Ammunition

Crew

Set Up Time

Weight

Price

KBA

25mm KBA

1

NA

112 kg

$11468

 

Weapon

ROF

Magazine

Range

Round

Damage

Penetration

Oerlikon KBA

5

100 Belt (x2)

380

AA

C1  B8

-4C

 

5

100 Belt (x2)

510

APDS

6

8/7/6/4

 

5

100 Belt (x2)

510

APFSDS

6

11/10/8/5

 

5

100 Belt (x2)

510

APFSDSDU

6

14/12/10/7

 

5

100 Belt (x2)

510

API

6

5/4/3/2

 

5

100 Belt (x2)

510

FAPDS

C1  B3

7/6/5/4

 

5

100 Belt (x2)

380

HEI

C1  B5

-3C

 

5

100 Belt (x2)

380

SAPHEI

C1  B3

4/3/2/1

 

25mm Oerlikon GBI-A01

     Notes:  This is a relatively simple single-barreled 25mm antiaircraft mount using a KBA autocannon.  The weapon requires virtually no set-up time; in a pinch, the GBI-A01 may be fired only partially set up, while still hooked to its towing vehicle (though this limits traverse to 45 degrees in either direction).  Elevation and traverse are manual, using handwheels.  The gunsight is equivalent to a 4x set of binoculars.  The Cannon is fed from two ammunition boxes, one on each side of the gun.

Weapon

Ammunition

Crew

Set Up Time

Weight

Price

GBI-A01

25mm KBA

2

30 seconds

600 kg

$46084

 

Weapon

ROF

Magazine

Range

Round

Damage

Penetration

GBI-A01

5

40 Belt (x2)

380

AA

C1  B8

-4C

 

5

40 Belt (x2)

510

APFSDSDU

6

14/12/10/7

 

5

40 Belt (x2)

510

API

6

5/4/3/2

 

5

40 Belt (x2)

380

HE

C1  B5

-3C

 

35mm Oerlikon GDF-001/002/003/005

     Notes:  This twin 35mm autocannon began development in the late 1950s.  The first model was known as the GDF-001, and had a low-power telescopic sight, but was otherwise a basic antiaircraft gun.  In 1980s, the GDF-002 was introduced, using a higher-power sight and digital data transmission; it can also be used in conjunction with radar systems.  The GDF-003 increases the integration possibilities to include vehicle equipped with the Marksman turret or Skyguard radar system.  The GDF-005 adds an autonomous gunsighting system so that several guns may be remote-controlled; an automatic reloader with ammunition storage on the gun, a laser rangefinder with ballistic computer, and better cannons.  The cannons used in the GDF-001, 002, and 003 are KDBs; the 005 uses KDC autocannons.

Weapon

Ammunition

Crew

Set Up Time

Weight

Price

GDF-001

35mm KDB

4

4 Minutes

6300 kg

$290535

GDF-002

35mm KDB

4

4 Minutes

6300 kg

$297795

GDF-003

35mm KDB

4

4 Minutes

6700 kg

$305243

GDF-005

35mm KDC

4

4 Minutes

7250 kg

$325243

 

Weapon

ROF

Magazine

Range

Round

Damage

Penetration

GDF-001/2/3

10

56 Belt (x2)

430

AHEAD

C2  B12

17C

 

10

56 Belt (x2)

570

APCI

8

8/7/6/4

 

10

56 Belt (x2)

570

APDS

8

12/10/9/6

 

10

56 Belt (x2)

570

APFSDS

8

17/14/12/8

 

10

56 Belt (x2)

570

FAPDS

C1  B5

15/12/11/7

 

10

56 Belt (x2)

430

HEI

C2  B10

-2C

 

10

56 Belt (x2)

430

HEIBF

C1  B12

-3C

 

10

56 Belt (x2)

430

HEINF

C3  B15

-4C

 

10

56 Belt (x2)

570

SAPHEI

C1  B5

7/6/5/3

GDF-005

10

65 Belt (x2)

430

AHEAD

C2  B12

17C

 

10

65 Belt (x2)

570

APCI

8

8/7/6/4

 

10

65 Belt (x2)

570

APDS

8

12/10/9/6

 

10

65 Belt (x2)

570

APFSDS

8

17/14/12/8

 

10

65 Belt (x2)

570

FAPDS

C1  B5

15/12/11/7

 

10

65 Belt (x2)

430

HEI

C2  B10

-2C

 

10

65 Belt (x2)

430

HEIBF

C1  B12

-3C

 

10

65 Belt (x2)

430

HEINF

C3  B15

-4C

 

10

65 Belt (x2)

570

SAPHEI

C1  B5

7/6/5/3