Switzerland Rheinmetall
Oerlikon Millennium Gun
35mm naval close-in weapon system using a revolver cannon firing AHEAD airburst ammunition, designed for compact installation against anti-ship missiles and small craft.
Compiled from public sources ·primary reference ↗
Procurement snapshot
Availability & export
National export licensing
Subject to Switzerland export-control approval; verify eligibility with the manufacturer.
Channel: Direct commercial / G2G
Fielded & proven
Operator data not public
Status: active.
Lifecycle cost (est.)
No public unit price to model from. Why so few systems publish one →
Interoperability
No standardised NATO calibre / datalink detected in public specs.
Competitive field
80 comparable systems from 32 other manufacturers
Counted in the WeaponSpecs database: air-defense systems built by another manufacturer. A count of what this catalog holds, not a survey of the whole market. See the alternatives →
Derived guidance from public data, export regime by country of origin, lifecycle from the GAO ~30% acquisition rule. Verify eligibility, pricing and offsets with the manufacturer and your acquisition authority.
Full specifications
Performance
Speed, range, altitude and engagement capability.
| Effective range Distance at which the weapon reliably hits point targets. Higher extends engagement envelope. | 5,000 m |
|---|---|
| Rate of fire Rounds per minute (cyclic). Higher increases suppression and hit probability. | 1,000 rpm |
| Muzzle velocity Projectile speed leaving the barrel. Higher means flatter trajectory and better armor penetration. | 1,050 m/s |
Firepower
Armament, payload and guidance.
| Main armament Primary weapon: main gun, cannon or missile type. | 35 mm Oerlikon revolver cannon (four-chamber, gas-operated) |
|---|---|
| Caliber Bore diameter of the main gun or rifle. Larger throws heavier projectiles; not simply better, ammunition commonality matters. | 35 mm |
| Ammunition Rounds carried (main gun) or standard magazine capacity. | 252 |
Physical
Dimensions, weight and crew.
| Length Overall length including gun/probe where applicable. | 5.5 m |
|---|---|
| Combat weight Fully loaded weight. Lighter eases transport and bridging limits; heavier often means more armor. | 3,200 kg |
| Crew Personnel required to operate. Fewer reduces exposure; autoloaders trade a loader for mechanical complexity. | 0 |
Specifications compiled from public Rheinmetall and reference sources ↗. Published defense figures are approximations, treat comparisons as directional. Last verified 2026-07-04.
Compare with rivals
See how it stacks up
Rheinmetall Skyranger 30 
KBP Instrument Design Bureau Pantsir-S1 Frequently asked questions
How much does the Rheinmetall Oerlikon Millennium Gun weigh? +
The Rheinmetall Oerlikon Millennium Gun has a combat weight of 3,200 kg.
How many crew does the Rheinmetall Oerlikon Millennium Gun require? +
The Rheinmetall Oerlikon Millennium Gun requires a crew of 0.
What is the main armament of the Rheinmetall Oerlikon Millennium Gun? +
The Rheinmetall Oerlikon Millennium Gun's primary weapon is the 35 mm Oerlikon revolver cannon (four-chamber, gas-operated).
Similar systems
Raytheon (RTX)
Phalanx CIWS (Mk 15)
Rafael Advanced Defense Systems
C-Dome
LIG Nex1
K-SAAM (Haegung)
Thales Group
RAPIDFire
Related coverage
