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This Sigma-1 flipper by Andrey Biryukov features a "frost" style polished blade, with notched flipper tab. The handle has a bead blast finished titanium frame with carbon fiber cover, tip up clip, and backspacer with lanyard bail. Comes with original leather belt sheath, COA (in russian) and pivot tool. Excellent condition.
Blade Length 4
Overall Length 9.375
Closed Length 5.375
Weight (oz) 4
Source Previously owned
Knife Type Tip Up Carry, Tip Up Clip
Blade Material M398
Blade Details Clip Point
Handle Material Metallic, Carbon Fiber
Other Details Tactical
Andrey Biryukov is a very talented knife maker from Pavlovo city in Russia. In 2004 Andrey started his blacksmith career as a helper in the local workshop and fell in love with knife making. In the beginning, he was forging Damascus and simple steel blades only. But in 2010, he decided to go "all-in" and built his knife shop, invited his friends knife makers, and started his incredible adventure as a custom knife maker :-) Today, he is a well-known Russian knife maker and, according to many independent reviewers, is the best heat treatment specialist for powdered steels like CPM S125V and REX 121 and more.
