HM Defense StealthMS5

The HM Defense Stealth MS5 is an ultra-compact 5.56 NATO platform designed for discreet deployment, protective details, and confined-space operations. With a 5-inch barrel and HM Defense’s patented Monobloc barrel system, the MS5 prioritizes maximum maneuverability, reliability, and concealability while maintaining compatibility with standard AR-15 operating controls.

This platform is well suited for plainclothes units, executive protection, vehicle operations, and specialized tactical roles where a traditional carbine or SBR is impractical.

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Operational Advantages for Law Enforcement

 

• Extremely compact footprint for vehicles, backpacks, and discreet carry

• Patented Monobloc barrel system enhances durability and gas system reliability

• Optimized for suppressed use in close-quarters environments

• Standard AR-15 manual of arms, minimizing training overhead

• Full compatibility with duty optics, lights, and aiming solutions

• Ideal for protective services and specialized units

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Barrel System

 

• 5″ 4150 chromoly steel barrel

• Caliber: 5.56 NATO / .223 Remington

• Patented Monobloc design with integral gas block

• ½×28 threaded muzzle

• Engineered for short-barrel gas efficiency and reliability

The Monobloc barrel reduces alignment issues and eliminates traditional gas block failure points—critical in extremely short-barreled platforms.

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Upper & Lower Receivers

 

• Forged 7075-T6 aluminum

• Type III hard-coat anodized finish

• Flat-top Picatinny upper for optics mounting

• Mil-Spec lower receiver for parts compatibility and serviceability

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Bolt Carrier Group

 

• M16-profile bolt carrier group

• HM Defense patented HMB Bolt, designed to enhance bolt strength and service life under high-stress operating conditions

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Handguard & Accessory Integration

 

• Free-float aluminum handguard

• Picatinny top rail

• M-LOK mounting surfaces for compact weapon lights or mission-essential accessories

• Optimized for close-in engagement distances

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Controls & Ergonomics

 

• Mil-Spec fire control group

• Standard AR controls for immediate familiarity

• QD sling-ready end plate

• Compact configuration supports rapid presentation in confined environments

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Weight & Handling

 

• Ultra-lightweight, compact configuration

• Designed to reduce fatigue and improve control during vehicle or protective operations

• Balanced for one-handed manipulation when required

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Suppressor & Tactical Integration

 

• Threaded muzzle supports agency-approved suppressors

• Frequently paired with suppressors to improve blast management in confined spaces

• Compatible with night-vision devices, IR lasers, and duty optics

• Buffer and gas tuning can be configured for agency ammunition and suppressor selection

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Specifications

 

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Agency Use Case Summary

 

The HM Defense Stealth MS5 is ideal for:

• Protective services and executive protection

• Plainclothes and covert units

• Vehicle-borne operations

• Specialized tactical roles

• Suppressed close-quarters applications

• Discreet deployment platforms