Ontario OKC3S Khaki Brown USMC Bayonet 8" Blade and Scabbard (6504)


MSRP* : $204.95 | You Save* : $52.50 (26%)


OKC3S USMC Bayonet & Scabbard

Ontario Knife Company

This knife is used/issued by United States Marine Corps

NSN: 1095-01-506-3424

Designed to Marine Corps Military specifications for attachment to M16 rifles, this bayonet features a black coated clip-point blade of a proprietary carbon steel formula, with a small 1-3/4" serrated section at the base of the blade and a sharpened upper swedge. The grooved handle is very grippy and resilient, for use with or without gloves. The hard MOLLE compatible sheath with strap down loops has drain holes for amphibious use, an embedded ceramic-coated aluminum sharpener on the back, and a sturdy ballistic nylon harness for attachment to load bearing equipment in multiple ways.

Markings on blade may vary.


  • 0.200" thick proprietary carbon steel
  • 13.25" overall length
  • 8" blade length
  • Hardness RC 53-58
  • 1.75 mission serration
  • Zinc phosphate nonreflective finish
  • Dynaflex handle ergonomically grooved to reduce hand fatigue
  • Manufactured with a low noise signature polyester elastomer
  • Fitted internal stainless steel spring friction to secure bayonet
  • Ceramic coated aluminum honing rod located on back of scabbard
  • Equipped with two load bearing attaching straps with cross straps
  • Optional OKC3S compatible leg straps available
  • Weight: 13.8 oz.
  • Made in USA

UPC Code: 071721065043

Zytel Handles
Zytel Handles A nylon polymer that is lightweight and extremely durable, Zytel can be shaped and textured to provide excellent grip.
Kydex Sheath
Kydex Sheath Waterproof, scratch resistant, and low friction. It will hold its shape and makes a great alternative to leather.
1095 Carbon Steel
1095 Carbon Steel An excellent hard use steel, 1095 is a primary choice for camping and larger fixed blade knives for its extreme toughness and ability to hold an edge. Corrosion resistance is very limited with this steel (it will rust) and most blades come with a coating to prevent premature rusting.
Made in USA
Made in USA This product is USA born and raised.
Ontario OKC3S Khaki Brown USMC Bayonet 8" Blade and Scabbard (6504)rated 4.915 stars out of 5 (47 reviews)
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Ontario OKC3S Khaki Brown USMC Bayonet 8" Blade and Scabbard (6504)
rated 5 stars out of 5
Jun 22, 2019
Pros: Blade Material, Sheath/Scabbard, Handle Material, Weight, Materials, Overall Quality, None
Cons: Blade Sharpness
THE BEST Mil-Spec Bayonet/Combat Knife!!!
I use this knife for just about everything you could think of! I mostly use the top 5-inches of the blade unless I need to cut rope with the serrated part. I have NEVER seen this knife break or fail anywhere. This knife came semi-sharp but I like to sharpen my knives anyway so now it's stupid sharp! This knife is WAY tougher than the Ka-Bar and I'm so glad I have this knife. It can also be used as a chopper if you're out in the woods. It's a very good utility/combat knife. I don't have a rifle to mount it to, but I can mount it on a stick and use it as a spear. I love this knife, it's a great knife for survival purposes.It is full tang and you can see just how thick the tank of this knife really is which is very thick indeed!! I use this knife as a beater and it's held up great so I will most likely buy another to keep in the box. This Bayonet is worth every penny, don't under-estimate this knife at all!!!
Ontario OKC3S Khaki Brown USMC Bayonet 8" Blade and Scabbard (6504)
rated 4 stars out of 5
Ronald D
Colorado, south of the Arkansas R
Jun 22, 2017
Pros: Materials, Overall Quality, Handle Material, Blade Material
Cons: Weight, None
pre-review of bayo-knife
This is only the second bayo-knife I have seen for my ARfiteens. The other was by ZT, a LOT more expensive and no longer available. My main issue is with the grip-heavy weight distribution- it's a little off balance, but probably to be expected in a knife that isnt designed to be a chopper. NO doubt that it is a slicer with a proper knife-edge honed into the blade. These knives will be used for opening boxes, crates, cutting rope, line, wire..Steel seems to be a 1095 Carbon, or something very like it. Perhaps the temper is drawn down a little to make for a stronger blade, not sure on that. This will be a general purpose knife serving as a pig-sticker too, attached to my duty belt or pack. There is a Vietnam-era bayo in my collection, a thin, daggerish thing. This KNIFE bayo is miles ahead of any of that style. Carried a USMC KaBar years and years ago.. this weapon/tool is years ahead in that it is both a knife and a useful bayo that won't be left behind. IMO, YMMV!
Ontario OKC3S Khaki Brown USMC Bayonet 8" Blade and Scabbard (6504)
rated 4 stars out of 5
Jun 12, 2017
Pros: Overall Quality, Blade Material
Cons: None
Great knife but it is dull
Great knife..its just dall as D!@#. XD
Read all 47 Reviews »


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