The Back Door: White River Knife & Tool Ursus 4.5 Fixed Blade - MagnaCut, Micarta, 4.5″ Blade - Made in USA (Used)

Back Door Entry. Built Like a Tank.

This is a White River Ursus 4.5 in MagnaCut, listed as used but in essentially brand new condition. According to the original owner, this knife is BNIB with COA and original box, never cut or carried. He preferred the Cub model and moved this one along.

If you’ve been wanting an Ursus 4.5 without paying full retail, this is a strong opportunity.

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Condition

• Used, but never cut or carried

• Includes original box and COA

• Factory edge

• No visible wear

• Excellent overall condition

As always with Back Door listings, reach out if you’d like additional photos before purchasing.

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About the Ursus 4.5

The Ursus 4.5 is a serious fixed blade built for real-world use. With a 4.5″ MagnaCut blade and a 9.5″ overall length, it sits in that sweet spot between camp knife and hard-use field blade.

White River’s heat treat on MagnaCut is dialed in, rated 62–64 HRC, giving you excellent edge retention, toughness, and corrosion resistance. Paired with Micarta handles and a Kydex sheath, this is a knife built to work.

Specifications from the COA:

• Blade Length: 4.5″

• Overall Length: 9.5″

• Blade Steel: MagnaCut

• Hardness: 62–64 HRC

• Handle: Micarta

• Sheath: Kydex

• Made in USA

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Why This One Makes Sense

White River is one of those American makers that quietly overdelivers. Excellent fit and finish, excellent heat treat, and zero nonsense.

We don’t always get to choose products made in the USA. Most categories simply don’t have that option anymore. But pocket knives and fixed blades are different. There is still a thriving American manufacturing base building tools like this right here at home.

Supporting brands like White River helps ensure that continues.

If you’ve been wanting a hard-use MagnaCut fixed blade with zero break-in history, this Ursus 4.5 is ready to go.