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SOG Pentagon FX 4.77 inch Fixed Blade Knife

by SOG
ID 1694091
MPN 17-61-02-57
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SOG Pentagon FX 4.77 inch Fixed Blade Knife


SOG Pentagon FX 4.77 inch Fixed Blade Knife
by SOG


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SOG Pentagon FX 4.77 inch Fixed Blade Knife - Representing an evolutionary step in hard-use fixed blades, Pentagon FX is a full-sized knife made for the modern-day warfighter. It features a double-edge CYRO S35VN full-tang steel blade, removable G10 handles and a GRN sheath compatible with SOG's next-generation Universal Mounting System. It's fully customizable to meet the demands of various missions, and purposefully designed to exceed expectations. Pentagon FX’s sheath system isn’t the only thing that’s adaptable. The handles can also be removed for a slimmer profile. Pentagon FX comes with multiple accessories from SOG’s Universal Mounting System. It allows for flexible mission specific set-up, including adjustable sheath retention, secondary retention, mounting angle, mounting method and combinations of each.


  • An American-made steel featuring vanadium and niobium carbides that provide high degrees of toughness and wear resistance.
  • Textured for optimal grip, the G10 handles feature a single-fastener slip-on / slip-off design that allows you to customize your knife to your mission's needs.
  • No-tool sheath adjustment allows you to increase or decrease the retention strength as needed.


Type Knife
Model 17-61-02-57
Color Flat Dark Earth
Blade Edge Plain
Blade Hardness 58-61 HRC
Blade Length 4.77in
Blade Material CRYO CPM S35VN
Blade Style Dagger
Finish Black
Handle Material G10
Opening Fixed Blade
Overall Length 9.93in
Sheath Yes
Use Tactical
Weight 6.5oz
Made in the USA Yes


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  • If any warranty issue comes up, we'll cover the cost of packing & shipping to the manufacturer from any Sportsman's Warehouse location.
  • Cleaning, scope mounting, and bore sighting.
  • Discounts on gun customization from The Gunsmith at Sportsman's Warehouse.
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  • Provides two professional field strip & cleanings per year.
  • Unlimited professional scope mounting & bore sighting during coverage.
  • Provides warranty concurrent with manufacturer's warranty for the firearm, including all parts & labor for warranty repairs during coverage.
  • We'll keep you informed of any recall notifications.
  • Free packing/shipping to manufacturer &/or manufacturer's authorized service center for warranty repairs ($20-$40 value).
  • 15% discount on all customizing & elective gunsmith services and FREE shipping to The Gunsmith at Sportsman's Warehouse.
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