Moog’s RIwP with 30 mm Mk44 Debuts in UK at C-UAS Expo

Moog’s Reconfigurable Integrated-weapons Platform (RIwP®) continues to evolve as one of the most versatile remote weapon stations on the market. Its latest upgrade, presented for the first time in the UK during the British Army’s Counter-UAS Expo (July 2025) at Thorney Island, integrates the 30×173 mm Bushmaster Mk44 chain gun—a significant step up in firepower from earlier 30×113 mm configurations.

This debut underscores RIwP’s multi-role adaptability, offering enhanced lethality against both traditional armored threats and emerging challenges such as drone swarms and loitering munitions.

Firepower Upgrade: 30×173 mm Bushmaster Mk44

The integration of the Mk44 Bushmaster II into RIwP dramatically enhances the system’s lethality profile:

Caliber: 30×173 mm, vs. the 30×113 mm variant previously demonstrated.
Muzzle velocity: ~970 m/s, delivering superior penetration and effective range (up to 3,000+ m).
Ammunition compatibility: Capable of firing multiple types—HEI, APFSDS, programmable airburst (ABM), and proximity-fused rounds.
Kinetic effect: Almost double the projectile mass compared to 30×113 mm, allowing effective engagement of lightly armored vehicles, UAVs, and fast attack craft.

This configuration transforms RIwP from a primarily counter-UAS and light support role into a true multi-domain fire support platform.

Modularity and System Architecture

RIwP is built around a common weapons hub that maintains up to 85% hardware commonality across variants. This modularity enables:

Rapid weapon swaps (from 7.62 mm machine guns to ATGMs or large-caliber cannons).
Integration of EO/IR sensors, radar, and electronic warfare payloads for layered situational awareness.
Multi-mission adaptability: Counter-UAS, SHORAD, direct fire support, convoy protection, or Mounted Close Combat Overwatch (MCCO).
Simplified logistics and maintenance through common spare parts and training pipelines.

This architecture aligns with modern open-systems standards and NATO interoperability requirements.

Operational Roles & Tactical Value

The Mk44-armed RIwP can serve across a wide spectrum of missions:

Counter-UAS: Programmable airburst rounds and proximity-fused shells enable the engagement of drones at varying altitudes and speeds.
Infantry Support: Precision suppression of fortified positions or light armor.
Vehicle Integration: Suitable for mounting on 8×8 IFVs (e.g., Boxer, Stryker) or static base-defense installations.
Naval Adaptation: Potential for use on patrol boats against asymmetric maritime threats.

Its ability to integrate sensors + effectors + C2 nodes makes it an effective component of modern networked defense architectures such as JADC2.

Comparison with Competing Systems

When compared to other remote weapon stations and turrets:

Kongsberg Protector RWS: Widely fielded but generally limited to 12.7 mm or 30×113 mm systems; less modular than RIwP.
Rheinmetall Lance 2.0: A more complex, manned turret with higher integration cost; RIwP offers a lighter, unmanned alternative.
Rafael Samson RCWS: Proven in combat, but not as reconfigurable across calibers and payloads.

RIwP’s unique plug-and-play flexibility sets it apart, reducing lifecycle costs and enabling rapid adaptation to evolving threats.

Industrial and Strategic Impact

Moog’s commitment to establish a UK-based production and sustainment line for RIwP if selected by the British Army carries significant strategic implications:

Local supply chain resilience, reducing dependence on U.S. exports.
Job creation and industrial participation, aligning with UK defense procurement policy.
Faster fielding of counter-drone and multi-role weapon systems into British Army formations.

This move positions Moog as a strong contender in upcoming British Army SHORAD and MCCO programs, potentially rivaling established European suppliers.

Key Points

Debut: UK Counter-UAS Expo, July 2025, Thorney Island.
Main Upgrade: Integration of 30×173 mm Mk44 Bushmaster cannon.
Capabilities: Airburst rounds, C-UAS role, light armor defeat, extended range.
Advantages: Modular, 85% hardware commonality, logistics simplification.
Strategic Impact: UK production option, aligning with Army modernization.