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The US Navy Mark 3 Mod 0 is the exclusive fighting knife of the US Navy. The Mark 3 fighting knife is battle tested and easily recognized by the long service life of this knife. Included with each Mark 3 Mod 0 fighting knife is the correct sheath and a lifetime warranty from Ontario Knife.

In stock

SKU N6141

 Secure Online Payments

     
 American Owned and Operated
 

20+ Years In Business

Details

The US Navy Mark 3 Mod 0 knife is a multi-purpose fixed blade fighting knife. Issued to all sailors in the US Navy, the Mark 3 is capable of serving as a dive knife, fighting knife, or utility knife.

Features:
  • Serrated Saw Edge on Spine
  • Striking Butt Can Be Used as Hammer
  • Checkered Grips
  • USN Marked On Grips and Sheath
  • Official Knife of the US Navy SEALS
  • Made in the USA
  • Lifetime Warranty from Ontario Knife Company
Specifications:
  • Blade Edge: Plain
  • Blade Hardness: 49-54 HRC
  • Sheath Material: Molded Plastic
  • Sheath Color: Black
  • Sheath Type: Belt Clip
  • Handle Color: Black
  • Blade Grind: Flat
  • Blade Finish: Oxide
  • Blade Color: Black
  • Blade Thickness: 0.17 Inch
  • Blade Material: 440A Stainless Steel
  • Blade Length: 6 Inches
  • NSN#: 1095-00-391-1056
  • Overall Length: 10.75 Inches

More Information

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Customer Reviews

Mk3
Review by Hightop
Verified Buyer
One bad SOB! The moment your hand grips it, you feel like you just graduated Basic Training. Makes all others seem insufficient.
Excellent product
Review by Koni F.
Verified Buyer
Appears well made sturdy knife, Excellent steel, comes with a good scabbard but it does slightly scratch the blade. Still excellent product.
Knife is 5/5 - Sheath is 2/5
Review by Ronaldo F.
Verified Buyer
Sheath is pretty cheap and lame, bought a Sepc-Ops short sheath for this. Knife is great, sheath is okay at best.
cutting edge
Review by Sulema P.
Verified Buyer
For the life of me, I cannot understant why knife manufacturers spend so little attention to blade sharpening. I just received a new MK-3. Having grown up and served in the Navy I know these knives, and what do I get, a knife w/ an asymmetrical cutting edge. Such carelessness at this very important step in the knife making process is so unacceptable I cannot frame it in words and have this note published. Ontario, a USA company I should support putting out such ill-crafted military knives. I've had very cheap Chinese, Taiwanese, and Indian knives are far supperior in workmanship. What is happening to us? Incompetence? A lack of pride in workmanship? Sorry, I just don't get it! M
OutStanding Blade!
Review by Sterling K.
Verified Buyer
Ontario knives are well known for making a great knife; sturdy and durable, and a great value for the money. This MK3 is of no exception. Still in use by the navy today, this knife has become a legend in the special operations communities. The Marines have their Ka-Bar, but the navy has their MK3... and so could you!
Top shelf blade
Review by Lasandra H.
Verified Buyer
Seal team approved!
Even better than my 1219C3 Mod.1942 KA-BAR (Union cutlery, Co. Of NY)
Review by Tanique H.
Verified Buyer
Was able to penetrate my twins solid oak door!
On my first try. Come on guys, you know how it is being a Father nowadays. The little women is our soul breadwinner and I... Well I keep the whole show running.. (Behind the scenes of course ????) But Dag nabbit, those girls are so....... Uh wonderful and spirited that gosh darn it. I got a little steamed..... Just that one time but they took my glasses and ran away and I hope that you can understand.
Anyways the knife. It's huge and it's BLACK! VERY INTIMIDATING! The weight rests comfortably and the handle makes it all Ergonomic. And it's BLACK!
Definitely a good investment, as a matter of fact I bought a second one. But I didn't tell her. My wife. She said that I would have to ask her so........

BTW.
The twins destroyed my glasses.. Precious little things..... yeah.
Killer knife
Fake Knife? Just a replica?
Review by Ethen N.
Verified Buyer
The media could not be loaded.
 So it came nor oiled. The tip on thr top side is not even looks like someone cut it by hand...

When removing it from the Sheath it scratches the knife even when oiled.

The Sheath dulls the knife each time you put it in. I saw this after sharpening my knife to a 17 and 19 degree angle. Lost huge amount of sharpness after sheathing it one time.

Black powder coat on knife only. This coat gets removed with just oiling...

Called KeepShooting and the person I talked to said it sounded like a fake knife and I agreed...

When you take the screw out the the plastic does not remove easily. It is a full tang for those who care.
Ontario 6141 MK 3 Navy Knife (Black)
Review by Gini C.
Verified Buyer
A MUST FOR EVERY POLICE DIVER OR PUBLIC SAFETY DIVER. US NAVY SEAL TEAM MEMBER ISSUED. FITS PERFECT IN YOUR HANDLE. THE BEST SHEATH THAT I HAVE SEEN AS IT SECURELY HOLDS THE KNIFE IN PLACE WITHOUT THE SNAP STRAP. YOU CANNOT DESTROY THIS KNIFE. GREAT THROWING KNIFE. MADE OF STAINLESS STEEL. HAS SAW CUTTING SIDE OF BLADE PLUS HANDLE BUTT IS GREAT FOR HAMMERING OR BANGING ON TANK FOR SIGNALING.
Cool knife!
Review by Nonna C.
Verified Buyer
This knife is cool! If you are into military knives, it's a great one to add to your collection.
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