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 |