The ProTech Runt 5 SW/Magna R5405 is a premium compact automatic knife that combines the ultra-portable Runt 5 platform with high-performance MagnaCut steel and a Serrated Wave (SW) opening feature. This model delivers exceptional edge retention, corrosion resistance, and rapid deployment in one of the smallest automatic knives offered by ProTech.
Why Choose the ProTech Runt 5 R5405?
ProTech Knives has earned a strong reputation for producing high-quality compact automatic knives. The Runt 5 series is designed for users who want a discreet, lightweight automatic that can be carried comfortably every day. The R5405 model elevates the Runt 5 with two standout upgrades: a blade made from premium **MagnaCut** steel and a Serrated Wave opener. MagnaCut steel is widely regarded as one of the best knife steels available, offering an outstanding balance of edge retention, toughness, and corrosion resistance. The Serrated Wave feature allows the blade to be opened quickly by catching on the pocket during a draw, providing an additional deployment option alongside the push-button automatic mechanism. This makes the ProTech Runt 5 SW/Magna R5405 an excellent choice for collectors and users who want premium materials in a compact, reliable automatic knife.
Key Features of the ProTech Runt 5 R5405
- MagnaCut Steel Blade – Premium CPM MagnaCut steel offering exceptional edge retention, toughness, and corrosion resistance
- Serrated Wave (SW) Feature – Emerson-style wave opener for rapid manual deployment when drawn from a pocket
- Automatic Deployment – Fast and reliable push-button automatic opening mechanism
- Compact Runt 5 Design – Ultra-small and lightweight for discreet everyday carry
- Premium Build Quality – Made in the USA with tight tolerances and excellent fit and finish
- Secure Lockup – Strong and dependable blade lock for safe, confident use
- Model R5405 – Official ProTech Runt 5 configuration with MagnaCut steel and Serrated Wave
Performance and Build Quality
The ProTech Runt 5 SW/Magna R5405 delivers impressive performance in an extremely compact package. The use of MagnaCut steel significantly enhances the knife’s cutting ability and longevity, allowing the blade to maintain a sharp edge through extended use while resisting corrosion far better than many traditional steels. The Serrated Wave feature adds versatility by enabling fast manual opening when the knife is drawn from a pocket, while the automatic mechanism provides instant push-button deployment. Despite its small size, the R5405 maintains ProTech’s high standards of fit and finish, with smooth action and a solid lockup. The compact dimensions make it easy to carry in any pocket without adding bulk, making it an ideal choice for users who want a high-performance automatic knife that remains discreet. This model is especially popular among collectors and enthusiasts who appreciate premium steel and functional features in a small automatic platform.
Technical Specifications
| Product Name | ProTech Runt 5 Automatic Knife |
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| Model Number | R5405 |
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| Blade Steel | CPM MagnaCut |
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| Blade Edge | Serrated Wave (SW) |
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| Opening Mechanism | Automatic (Push Button) + Wave Opener |
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| Handle Material | Aluminum |
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| Best For | Everyday Carry, Collection, Discreet Carry |
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| Key Benefit | Compact automatic knife with premium MagnaCut steel and Serrated Wave feature |
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Experience premium performance in a compact package.
The ProTech Runt 5 SW/Magna R5405 combines MagnaCut steel with a Serrated Wave opener in the ultra-portable Runt 5 platform.
The PROTECH RUNT 5 SW/MAGNA R5405 is an automatic knife. Automatic knives are regulated by federal, state, and local laws. It is the buyer’s responsibility to ensure compliance with all applicable laws before purchasing or possessing this product. This item is intended for lawful use only by qualified individuals.
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