Viper Safe

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The Viper Safe flipper knife combines elegant craftsmanship with rugged functionality. Featuring a tanto blade crafted from premium M390 stainless steel, it delivers superior cutting performance and edge retention for tasks of any size. The stunning 3D-milled handle scales complement the blade, exuding a refined yet practical aesthetic.
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Viper Knives Safe Liner Lock Flipper Knife 3.74" M390 Stonewashed Tanto Blade, 3D Milled Green …Retail price: $301.99, our price: $207.99
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Viper Knives Safe Liner Lock Flipper Knife 3.74" M390 Satin Tanto Blade, 3D Milled Natural Pau …Retail price: $214.00, our price: $167.95
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Viper Knives Safe Liner Lock Flipper Knife 3.74" M390 Stonewashed Tanto Blade, 3D Milled Brown …Retail price: $304.99, our price: $209.99
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Viper Knives Safe Liner Lock Flipper Knife 3.74" M390 Satin Tanto Blade, 3D Milled Natural Boco…Retail price: $297.99, our price: $204.99
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Viper Knives Safe Liner Lock Flipper Knife 3.74" M390 Satin Tanto Blade, 3D Milled Carbon Fiber…Retail price: $342.99, our price: $237.99
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Viper Knives Safe FAQ

The Viper Knives Safe is a robust folder engineered with premium M390 blade steel and an innovative secondary lock safety. Built with a full-hand grip and smooth bearing action, it delivers dependable strength for demanding cutting tasks.

How does the lock safety work on the Viper Safe?
The Viper Safe uses an automatic safety mechanism embedded directly into its liner lock. An integrated sliding tab prevents the lock bar from moving accidentally; to close the knife, you pull down on the tab before disengaging the liner lock as usual. This design provides extra peace of mind during hard use while remaining fluid with practice.
What blade shape and steel does the Viper Safe have?
The Viper Safe features a 3.74-inch blade made from premium Bohler M390 stainless steel. It utilizes a subtle, full-flat-ground tanto blade shape with a gentle transition point, making it versatile for both slicing and piercing. The blade thickness adds durability and structural strength to complement the steel's high edge retention.
How do you open the Viper Safe?
The Viper Safe features dual opening options using an index flipper tab or dual thumb studs. The blade rides on smooth ball bearings in the pivot, allowing quick and reliable deployment with either opening method.
What handle options are available in the Viper Safe series?
The Viper Safe series offers 3D-milled handle scales in options such as carbon fiber, canvas and burlap micarta, and natural woods like bocote. The handles are built with substantial thickness to provide a secure, hand-filling grip during heavy cutting.
Is the pocket clip on the Viper Safe reversible?
No, the Viper Safe is equipped with a deep-carry pocket clip set up for right-hand carry only. Because the secondary safety slider is optimized for right-handed thumb operation, the carry setup is dedicated to the right side.