CM-7M® Military Gas Mask

CBRN Full-Face Respirator Optimized for Optics and Rifle Use

• Military-issue design (OM-90 platform)

• Tapered facepiece for improved cheek weld

• Dual silicate glass lenses for optic compatibility

• Dual 40 mm NATO (Rd 40 × 1/7”) filter ports

• Integrated hydration system with canteen

• EN 136 Class III and EN 148-1 compliant

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Description

The CM-7M® Military Gas Mask is a professional-grade CBRN respirator developed in cooperation with Czech Army specialists and issued as the OM-90 to the Czech Armed Forces. This is not a downgraded civilian variant. It is the same platform, manufactured in the same facility, to the same standards, and offered under a special government license.

Unlike many full-face respirators, the CM-7M® is purpose-built for use with rifles, red dots, magnified optics, and night-vision devices. Its tapered profile and recessed binocular lenses allow a natural cheek weld and proper eye relief, while maintaining strong chemical resistance and low breathing effort. Designed for military units, police squads, rescue teams, and preparedness-focused civilians, the CM-7M® balances real operational capability with long-term durability.

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Built for Military, Law Enforcement & Preparedness

• Tapered facepiece enables proper cheek weld with long guns

• Dual-lens visor improves depth perception with iron sights and optics

• Low-profile cut integrates with ballistic helmets and ear protection

• Bromobutyl rubber provides high resistance to CBRN agents

• Dual NATO filter ports allow left- or right-side configuration

• Integrated drinking system supports hydration in contaminated zones

• Efficient internal airflow and sweat drainage for extended wear

• Shared component ecosystem with other CM-series masks simplifies logistics

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Specifications

Facepiece & Fit

• Facepiece Material: Bromobutyl rubber, non-irritating

• Inner Mask: Natural rubber, hypoallergenic

• Head Harness: Five-point rubber-textile

• Average Weight: 500 g

• Color: Black

• Available Sizes: 3 (Size 2 fits approximately 95% of users)

Visor & Vision

• Lens Material: Silicate glass

• Effective Field of Vision: 71.5%

• Binocular Field of Vision: 34%

Protection & Standards

• Filter Thread: Rd 40 × 1/7” (40 mm NATO standard)

• Resistance to NBC Agent Penetration: >48 hours

• Speech Intelligibility: ≥95%

• Standards: EN 136:1998 Class III, EN 148-1

Breathing Resistance

Environmental Performance

• Operating Temperature: −30 °C to +70 °C

• Liquid Intake Rate: 230 ml/min

• Manufacturer: MIRA Safety

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What’s Included

• CM-7M® Military Gas Mask

• Integrated hydration system with canteen

Gas mask filters are NOT included. Compatible 40 mm NATO-threaded filters must be purchased separately. Please select the correct size at checkout.

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Size Guidance (Summary)

• Size 1 (Small): Smaller faces, approx. ≤130 lb body weight

• Size 2 (Medium): Fits ~95% of users

• Size 3 (Large): Wide faces or users over ~250 lb

Proper fit is confirmed by a negative pressure test with a tight seal.

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FAQ

Is this the same mask used by the Czech military?
Yes. The CM-7M® is the civilian designation of the OM-90, produced on the same line to the same specifications.

Can filters be mounted on either side?
Yes. Either filter port may be used, and the unused port must be sealed.

Is this mask suitable for riot control?
No. The silicate glass lenses prioritize optical clarity over impact absorption. For riot environments, panoramic polycarbonate-lens masks are more appropriate.

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Service Life & Storage

• Shelf Life: 20 years from date of manufacture when stored properly

• Store in a cool, dark, dust-free environment

• Avoid sunlight, radiant heat, solvents, fuels, and ozone-producing equipment

• Prevent deformation of rubber components during storage

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Important Safety Notice

This respirator does not supply oxygen and must only be used in environments with at least 19.5% oxygen. Protection level depends on selecting the correct filter for the hazard present. Training and proper fit are essential for safe use.