MIRA Safety
CM-7M® Military Gas Mask (CBRN)
CM-7M® Military Gas Mask
CBRN Full-Face Respirator Optimized for Optics and Rifle Use
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Military-issue design (OM-90 platform)
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Tapered facepiece for improved cheek weld
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Dual silicate glass lenses for optic compatibility
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Dual 40 mm NATO (Rd 40 × 1/7”) filter ports
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Integrated hydration system with canteen
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EN 136 Class III and EN 148-1 compliant
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.
Built for Military, Law Enforcement & Preparedness
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Tapered facepiece enables proper cheek weld with long guns
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Dual-lens visor improves depth perception with iron sights and optics
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Low-profile cut integrates with ballistic helmets and ear protection
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Bromobutyl rubber provides high resistance to CBRN agents
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Dual NATO filter ports allow left- or right-side configuration
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Integrated drinking system supports hydration in contaminated zones
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Efficient internal airflow and sweat drainage for extended wear
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Shared component ecosystem with other CM-series masks simplifies logistics
Specifications
Facepiece & Fit
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Facepiece Material: Bromobutyl rubber, non-irritating
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Inner Mask: Natural rubber, hypoallergenic
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Head Harness: Five-point rubber-textile
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Average Weight: 500 g
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Color: Black
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Available Sizes: 3 (Size 2 fits approximately 95% of users)
Visor & Vision
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Lens Material: Silicate glass
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Effective Field of Vision: 71.5%
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Binocular Field of Vision: 34%
Protection & Standards
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Filter Thread: Rd 40 × 1/7” (40 mm NATO standard)
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Resistance to NBC Agent Penetration: >48 hours
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Speech Intelligibility: ≥95%
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Standards: EN 136:1998 Class III, EN 148-1
Breathing Resistance
| Measurement | Flow Rate | Max Resistance |
|---|---|---|
| Inhalation | 30 L/min | 20 Pa |
| Inhalation | 95 L/min | 50 Pa |
| Exhalation | 30 L/min | 60 Pa |
Environmental Performance
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Operating Temperature: −30 °C to +70 °C
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Liquid Intake Rate: 230 ml/min
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Manufacturer: MIRA Safety
What’s Included
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CM-7M® Military Gas Mask
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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.
Size Guidance (Summary)
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Size 1 (Small): Smaller faces, approx. ≤130 lb body weight
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Size 2 (Medium): Fits ~95% of users
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Size 3 (Large): Wide faces or users over ~250 lb
Proper fit is confirmed by a negative pressure test with a tight seal.
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.
Service Life & Storage
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Shelf Life: 20 years from date of manufacture when stored properly
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Store in a cool, dark, dust-free environment
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Avoid sunlight, radiant heat, solvents, fuels, and ozone-producing equipment
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Prevent deformation of rubber components during storage
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.
Product information
Stay Ready Outdoors — Return & Refund Policy
Last Updated: January 6, 2026
At Stay Ready Outdoors, we stand behind the quality of our products and want you to be completely satisfied with your purchase. If you need to return an item, please review our policy below.
Returns
We offer a 30-day return policy, meaning you have 30 days from the date you receive your item to request a return.
Return Eligibility
To qualify for a return, your item must be in like-new condition, meeting the following criteria:
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Unworn, unwashed, and with all original tags and stickers still attached.
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Free of any scents like perfume, cologne, or smoke.
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Free of any marks, stains, or pet hair.
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In its original packaging, including all accessories.
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Must include proof of purchase (receipt or order number).
How to Start a Return
To initiate a return, email us at info@stayreadyoutdoors.com with your order details. Once approved, you’ll receive return instructions and a prepaid shipping label. The cost of return shipping will be deducted from your final refund.
Important: Items sent back without prior approval will not be accepted.
Return Address:
Stay Ready Outdoors
ATTN: Returns
15236 Las Flores Ave
La Mirada, CA 90638
Damaged, Defective, or Incorrect Items
Please inspect your order upon arrival. If your item is damaged, defective, or incorrect, contact us at info@stayreadyoutdoors.com within 7 days so we can evaluate and resolve the issue promptly.
Non-Returnable Items & Exceptions
Some items are non-returnable, including:
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Briefs (due to hygiene reasons)
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Sale items (these sales are final)
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Gift cards
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Engraved or customized items
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Perishable goods (e.g., food)
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Personal care items (e.g., hygiene or beauty products)
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Hazardous materials (e.g., flammable liquids or gases)
Food or Drink Products – All Sales Final
Due to the nature of long-term food storage, all sales on food or drink products are final. We do not accept returns or exchanges on food or drink products for any reason including incorrect order, change of mind, or shipping delays. Replacements will only be issued in the event of a verified manufacturing defect or shipping damage, which must be reported within 5 days of delivery with supporting photo documentation.
Products Fulfilled via Shopify Collective
Some items sold by Stay Ready Outdoors are fulfilled by third-party vendors through Shopify Collective. These items follow slightly different return procedures:
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Return Window – Returns must be initiated within 30 days of the purchase date.
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Who Handles the Return – Returns and exchanges for these products are handled directly by the business from which the product originated. However, please do not hesitate to contact Stay Ready Outdoors at info@stayreadyoutdoors.com if you need help facilitating a return or exchange — we’re happy to assist.
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Customer Responsibility for Shipping Costs – Shipping cost responsibility for returns and exchanges varies by vendor. Some vendors offer free returns or exchanges, while others may require customers to pay return shipping.
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Size Exchanges – If a return is for a size exchange only, the replacement item will be shipped back to the customer once the original is received and inspected, following the vendor’s policy.
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Refunds – If a refund is due after inspection, the originating business will notify Stay Ready Outdoors and the refund will be processed back to the customer’s original payment method.
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Price Changes – Prices for products fulfilled via Shopify Collective are subject to change without notice.
Vendor-Specific Note:
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The Buffalo Wool Company – Items fulfilled by The Buffalo Wool Company through Shopify Collective follow the same return procedures listed above. Customers are responsible for the cost of shipping items back for return or exchange.
All other eligibility requirements and non-returnable item restrictions in our standard policy still apply unless otherwise stated above.
Exchanges
The fastest way to exchange an item is to initiate a return for the original item and, once the return is accepted, place a new, separate order for the item you want.
European Union Customers – 14-Day Cooling-Off Period
If your order was shipped to the European Union, you have the right to cancel or return it within 14 days of delivery, for any reason. To be eligible, items must be unused, with original tags and packaging, and include proof of purchase.
Refunds
Once we receive and inspect your return, we will notify you of its approval. If approved, we will issue a refund to your original payment method within 10 business days, less the cost of return shipping.
Please Note:
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It may take additional time for your bank or credit card company to process and post the refund.
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If you haven’t received your refund within 15 business days of our approval, please contact us at info@stayreadyoutdoors.com.
Need Help?
If you have any questions about your return or refund, we’re here to help:
📧 Email: info@stayreadyoutdoors.com
