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Sentinel Vault 135MT | Compact Airtight Firearm & Ammo Preservation Storage Chest

    $499.99

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        • 5-Year Warranty

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        Long-Term Gun & Ammo Preservation

        The SV135MT Sentinel Vault is engineered for long-term storage environments where oxidation, moisture, and environmental exposure quietly destroy reliability over time. With an airtight seal and optional nitrogen or argon purge capability, the vault helps displace oxygen and reduce the conditions that cause corrosion, tarnishing, and material degradation.

        • BUILT FOR WHEN IT COUNTS: With a nitrogen or argon purge cycle, the MT135 creates a low-oxygen environment that helps suppress corrosion and degradation of high-value firearms and ammunition for years to decades.
        • AIRTIGHT ENVIRONMENTAL SEAL: Seven reinforced locking clamps and a perimeter gasket create a controlled, airtight chamber that helps protect firearms, ammunition, and gear from humidity, dust, and air exposure.
        • NITROGEN OR ARGON PURGE COMPATIBLE: Dual purge valves allow the chamber to be flushed with nitrogen (or argon as an alternative if) to displace oxygen and moisture, helping reduce corrosion and long-term oxidation of stored metals.*
        • 135L INTERNAL STORAGE CAPACITY: Engineered with a straight-wall interior and flat base to maximize usable volume for pistols, PDWs, optics, ammunition, and mission-critical accessories.
        • MOBILITY CONVERSION SYSTEM: Integrated wheels and a reinforced tow handle enable smooth transport and repositioning whether staged in a vehicle, home, or field environment.
        • DUAL SIDE CARRY HANDLES: Heavy-duty grab handles provide controlled lifting, loading, and handling when moving or stacking the vault.
        • STACKABLE DEPLOYMENT DESIGN: Interlocking structure allows multiple Sentinel Vaults to stack securely for long-term storage, staging, or organized loadout systems.
        • MOLLE-COMPATIBLE TOP PANEL: External mounting grid supports pouch attachment, identifiers, and mission-specific labeling for quick configuration and visual organization.
        • RUGGED REINFORCED SHELL: Constructed from a heavy-duty molded polymer engineered to withstand transport vibration, impact, and demanding operational environments.
        • CLEAN INTERIOR WORKSPACE: Open cavity design supports flexible storage layouts while preventing snag points or wasted volume.

        The Science Behind Inert Gas Preservation

        Corrosion, oxidation, and moisture-related damage all require oxygen. When oxygen remains inside a sealed storage system, metal surfaces oxidize, lubricants degrade, and sensitive components break down over time. By displacing oxygen with inert gases like nitrogen or argon, the SV135MT creates a stable, non-reactive internal environment that significantly slows corrosion and preserves stored items without chemicals or pressurization.

        • Dry gases help reduce internal moisture

        • Nitrogen / Argon are used in aerospace, firearms storage, electronics, and industrial preservation

        • Stable and non-flammable gases are safe for controlled purge applications

        • Inert gases do not promote rust or chemical reactions

        Why We Recommend Nitrogen

        Nitrogen is a dry, inert gas commonly used to prevent corrosion and oxidation in sensitive storage environments. It safely displaces oxygen without reacting with metals, oils, or components, making it ideal for long-term preservation. It’s widely available, affordable, and used across industries like welding, automotive, aerospace, and firearms storage.

        Find Nitrogen Near Me

        SV135MT Overview & Demo

        See how the SV135MT gun and ammunition preservation system works in real use. This video walks through the key features and demonstrates the inert gas flush process, showing how the system helps reduce moisture, corrosion, and long-term degradation to protect your firearms and ammo over time.

        Controlled Storage for Firearms & Ammunition

        Whether you’re storing firearms for seasonal use, emergency readiness, or long-term contingency planning, the SV135MT is built to preserve performance of your equipment.

        • Long-term firearm storage

        • Ammunition preservation

        • Emergency and preparedness stockpiles

        • Secure home or garage armories

        Engineered for Secure, Long-Term Storage

        Purpose-built features designed to protect, organize, and move critical equipment with confidence.

        • <strong>135L Internal Storage Capacity:</strong> A straight-wall interior and flat base maximize usable space for organized storage.

          135L Internal Storage Capacity: A straight-wall interior and flat base maximize usable space for organized storage.

        • <strong>Airtight Environmental Seal:</strong> Seven reinforced locking clamps and a full perimeter gasket help create a sealed chamber.

          Airtight Environmental Seal: Seven reinforced locking clamps and a full perimeter gasket help create a sealed chamber.

        • <strong>Integrated Mobility & Carry System</strong>: Built-in wheels, a pull handle, and dual side carry handles allow for maneuverability.

          Integrated Mobility & Carry System: Built-in wheels, a pull handle, and dual side carry handles allow for maneuverability.

        • <strong>Lockable Security Design: </strong>Reinforced lock points allow the case to be secured with a cable padlock.

          Lockable Security Design: Reinforced lock points allow the case to be secured with a cable padlock.

        • <strong>Stackable, Reinforced Construction</strong>: Interlocking structure supports stable stacking of multiple vaults.

          Stackable, Reinforced Construction: Interlocking structure supports stable stacking of multiple vaults.

        What's Your Mission?

        From home readiness to mobile transport, the Sentinel Vault adapts to how, and where, you operate.

        • HOME DEFENSE / SECURE STORAGE

          Designed for organized, intentional home readiness, this setup places the Sentinel Vault as part of a clean, secure storage environment.

        • MOBILE UTILITY / VEHICLE TRANSPORT

          Built to move when you do, the Sentinel Vault transitions seamlessly into vehicle-based use.

        • PREPAREDNESS / EMERGENCY GEAR CACHE

          For long-term planning and scalable readiness, the Sentinel Vault supports stacked configurations that grow with your needs.

        • RANGE DAY / PRACTICAL USE CASE

          Built for practical use, not display, this profile highlights organized storage and efficient access during range sessions.

        Frequently Asked Questions

        The Sentinel Vault is a heavy-duty storage solution designed to help organize and protect firearms, ammunition, and sensitive equipment from environmental exposure such as humidity, dust, and airborne moisture. It is intended for home, garage, workshop, vehicle, and long-term storage use.
        Yes. The vault features a perimeter gasket and multiple reinforced locking clamps that help create a sealed interior when properly closed. This helps limit exposure to ambient air, dust, and moisture during storage.
        The purge ports allow users to introduce nitrogen or argon gas (sold separately) into the vault to help displace oxygen and moisture inside the chamber. This can support improved storage conditions for metal components and sensitive equipment over time.
        Purge frequency depends on how often the vault is opened and the surrounding environment. Many users choose to purge after initial setup, after extended access, or periodically during long-term storage. Results may vary based on conditions.
        Nitrogen and argon are commonly available from: - Local welding and industrial gas suppliers - Home improvement or hardware stores (small nitrogen or argon canisters) - Automotive or tire service suppliers (nitrogen inflation tanks) - Online retailers offering compressed gas canisters
        No. Nitrogen or argon gas is not included. The vault is purge-compatible, allowing users to connect their own regulated gas source if desired.
        Yes. The vault is designed to accommodate organized storage of firearms, ammunition, and accessories. Users should always follow local laws and safe storage practices when storing firearms and ammunition.
        The plate is engineered to meet NIJ Level IV test requirements. Multi-hit performance varies depending on caliber, spacing, and impact pattern.
        Yes. The vault includes reinforced lock points that allow it to be secured with a padlock or cable lock. Each unit includes a free Master Lock wire lock for immediate use.
        The Sentinel Vault is designed to help limit exposure to air and moisture but is not rated as fireproof or submersible. It should be used as part of a broader storage and safety strategy.

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