API VCI Pistol Storage Bag for Long-Term Handgun Rust Prevention The API VCI Pistol Storage Bag is an 11" x 15" anti rust handgun storage bag designed to protect pistols, revolvers, and optic-ready handguns during storage. This 8 mil multi-layer VCI gun bag creates a controlled anti-corrosion storage environment around your firearm. It helps protect exposed metal surfaces without messy grease, heavy oil, or disposable rust prevention methods. Made in the USA by Arms Preservation Inc., this pistol storage bag is built for gun owners who want clean, reusable, and dependable firearm rust prevention. Why This Is One of the Best VCI Gun Bags for Pistols Designed for pistols and revolvers: 11" x 15" outside dimensions fit many handguns, compact pistols, full-size pistols, and revolvers. Long-term protection: Helps protect firearms for 5-10 years when used correctly. 8 mil multi-layer construction: Combines barrier protection with VCI corrosion protection. Cortec VpCI-126 MIL inside layer: Uses a military-grade VCI film for long-term multi-metal corrosion protection. Low-MVTR barrier layer: The transparent MIL-PRF-22191F Type 1 outer layer has a low moisture vapor transmission rate (about 0.010 g/100 in²/day) to help keep the sealed air dry. Reusable hook-and-loop closure: Allows fast access without tape, zip ties, or heat sealing. Safe for firearm storage: Designed for common metal finishes, optics, polymer frames, wood grips, and red dot sights. Made in USA: Manufactured for reliable firearm preservation and long-term storage use. Built with Cortec VpCI-126 MIL Film API uses Cortec VpCI-126 MIL film on the inside layer of this VCI pistol bag. This transparent blue VCI film is designed for long-term corrosion protection on ferrous and non-ferrous metals. Cortec VpCI-126 MIL is qualified to MIL-PRF-22019D Type 1. It is also referenced with Naval Air Warfare Center Aircraft Division QPL listing 43500B120-3/531 for VpCI-126 Blue. Related technical references include TO 1-1-686, TM 55-1500-331-34, NAVAIR 15-01-4, and NACE Standard RP0487-2000. How the API VCI Pistol Bag Works VCI stands for Vapor Corrosion Inhibitor. Inside the sealed bag, the VCI layer releases corrosion-inhibiting molecules into the enclosed air space around the handgun. Those molecules settle on exposed metal surfaces and help reduce oxidation before rust starts. This protection can reach visible metal and hard-to-reach internal areas. The outer barrier layer helps reduce exposure to moisture, oxygen, and outside contaminants. This gives API bags a stronger storage advantage than basic single-layer VCI poly bags. Learn how API VCI firearm storage bags work. Low-MVTR Barrier Layer for Stronger Moisture Protection This bag's transparent outer layer is a MIL-PRF-22191F Type 1 barrier material. Its job is to slow how much outside moisture can reach your firearm. That barrier performance is measured by MVTR, or moisture vapor transmission rate — the amount of water vapor that passes through the film over a set area and time. A lower MVTR means a drier sealed environment inside the bag. The MIL-PRF-22191F Type 1 barrier used in this pistol bag has an MVTR of about 0.010 g/100 in²/day. A typical single-layer 4-mil VCI poly bag is around 0.06 g/100 in²/day. That makes this barrier roughly 6 times more resistant to moisture vapor. Material MVTR (g/100 in²/day) — lower is better Relative moisture protection API transparent barrier (MIL-PRF-22191F Type 1) 0.010 ~6× lower Typical single-layer 4-mil VCI poly 0.06 Baseline These values are typical published lab figures, not guaranteed specifications. The API barrier is measured under a demanding 90% relative humidity at 104°F (40°C), while many single-layer poly films are rated at 73°F (23°C). Because higher temperature increases vapor transmission, the real-world moisture gap is often even larger than these numbers suggest. A lower MVTR helps in two ways. It keeps the sealed air drier, so the Cortec VpCI-126 MIL film works in a low-moisture environment, and it helps hold VCI vapor inside the bag instead of letting it escape — supporting long-term protection for both ferrous and non-ferrous metals. Best Uses for This VCI Pistol Storage Bag This anti rust handgun bag is ideal for firearm owners who want simple, long-term pistol storage without constant re-oiling or repeated maintenance. Common fit applications Subcompact pistols Compact pistols Full-size handguns Many revolvers Many pistols with mounted red dots Range pistols and backup handguns Collectible pistols and stored sidearms Cleaner Than Oil-Heavy Gun Storage Many gun owners use heavy oil, grease, or repeated wipe-downs to prevent rust. The API VCI Pistol Storage Bag helps simplify that process. Place a clean, dry handgun directly into the bag and seal the hook-and-loop closure completely. When the handgun is removed, there is no heavy storage coating to wipe off. How to Use the API VCI Pistol Storage Bag Confirm the firearm is unloaded. Clean and dry the handgun before storage. Place the handgun directly into the VCI bag. Do not store the handgun inside a gun sock while it is inside the bag. Seal the hook-and-loop closure completely. Store the sealed bag in a stable indoor location. Gun socks and soft fabric sleeves can retain moisture. For best VCI performance, place a clean and dry firearm directly into the API VCI bag. Read the full VCI storage bag instructions. Product Specifications Product Name API VCI Pistol Storage Bag SKU FSP001 Outside Dimensions 11" x 15" Primary Use Pistol, revolver, and handgun rust prevention Material Design 8 mil multi-layer VCI and barrier construction Inside VCI Layer Cortec VpCI-126 MIL film Outer Barrier MVTR 0.010 g/100 in²/day — transparent MIL-PRF-22191F Type 1 layer (90% RH, 104°F / 40°C) Closure Reusable hook-and-loop closure Expected Protection Life 5-10 years when used correctly Country of Origin Made in USA Related VCI Gun Storage Options Need larger firearm storage sizes? Browse the full API firearm storage bag collection for rifle, shotgun, tactical rifle, M4, musket, and gear storage options. For more technical answers, visit the API VCI gun bag FAQ. VCI Pistol Bag FAQs What is the best VCI gun bag for pistol storage? The API VCI Pistol Storage Bag is a strong choice for handgun storage because it combines an 8 mil multi-layer design, Cortec VpCI-126 MIL film, and a reusable hook-and-loop closure. How long does this VCI pistol bag protect firearms? When used correctly, this API VCI pistol bag helps protect firearms for 5-10 years. Actual performance depends on storage conditions and how often the bag is opened. Is this VCI bag safe for pistols with red dot sights? Yes. API VCI gun bags are designed for firearm storage and are commonly used with optics, red dot sights, common finishes, wood grips, and polymer components. Do I need to oil the handgun before using the VCI bag? The firearm should be clean and dry before storage. Heavy grease or oil-heavy storage coatings are usually not needed when the bag is sealed and used correctly. Can I keep my pistol in a gun sock inside the VCI bag? No. For best results, place the firearm directly into the VCI bag. Soft gun socks can retain moisture and may reduce rust prevention performance. Does this VCI pistol bag need to be heat sealed? No. The reusable hook-and-loop closure is designed for normal storage use. Heat sealing may be used only when a permanent seal is required. What makes API different from basic single-layer VCI bags? API bags use multi-layer construction with both barrier and VCI protection. Basic single-layer bags may not offer the same barrier strength or long-term reusable design. What is the MVTR of this VCI pistol bag? The transparent outer barrier layer (MIL-PRF-22191F Type 1) has a moisture vapor transmission rate (MVTR) of about 0.010 g/100 in²/day. That is roughly 6 times lower than a typical single-layer 4-mil VCI poly bag, which is around 0.06. A lower MVTR means less water vapor reaches the firearm during long-term storage. API's barrier figure is measured at 90% relative humidity and 104°F (40°C), a more demanding condition than many single-layer films are rated at.
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