USGI M9 Bayonet

The M9 Bayonet from OKC is a USGI issued bayonet for the M16 rifle. Officially adopted in 1986, the M9 is a great improvement on the earlier M7 bayonet. With production numbers approaching 500,000 the M9 bayonet is a true battle tested bayonet that can double as a fighting knife.

Out of stock

SKU N6220

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American Owned and Operated


20+ Years In Business

Returns Accepted

Ships from Pennsylvania


Ontario Knife Company


  1. USGI M9 Bayonet
  2. Sheath Doubles as a Wire Cutter
  3. Black Oxide Non Reflective Finish
  4. Quick Detach Clips on Sheath
  5. Serrated Spine on Blade
  6. Official Bayonet of the US Military
  7. Blade Length: 7 Inches
  8. Overall Length: 12.25 Inches
  9. NSN#: 1095-01-227-1739
  10. UPC: 071721062202

More Information

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Customer Reviews

Great knife
Review by Dezire F.
Verified Buyer
This is the real thing. I do wish the blade was longer or the lug was closer to the muzzle. For maximum stabbing, of course.
Great Knife
Review by Dawny I.
Verified Buyer
This is the only way to go if you are interested in buying a bayonet. I have seen cheaper knockoffs but they do not fit near as tight as the Ontario M9 or cut wire near as easily. This is one solid knife and can cut double strand wire with no problems. I would highly recommend this product.
Quality Bayonet
Review by Saida N.
Verified Buyer
This Bayonet is a high quality mil-spec knife. It's scabbard is a high quality hard plactic, OD green and should stand up to hard use. I would recomend this product to anybody who wants a tough bayonet, ready for hard use.
m-9 bayonet with scabbard-green
Review by Baleigh L.
Verified Buyer
Well made bayonet with wire cutting scabbard made by Ontario Knife Co.The scabbard has a quick disconnect belt attachment.Everything is quality!
Expensive for what you get.
Review by Wasim E.
Verified Buyer
This is my second M9 style bayonet. The first was a cheaper version which I returned. The first knife was dull and cheaply made but it fastened securely to my Mossberg 590 shotgun. Wanting more I purchased this one expecting to get much better product since I was paying twice as much. It did come with a decent edge and had a much better feel to it. However feature wise it had less then the cheap knock off. Once fitted to my shotgun it flopped around so bad I thought it would fall off. After 20 min toying with it I realized the handle is about 1/8" longer then it should be which prevents it from properly fitting on my shotgun. This is a real deal breaker as I can find a better knife for less since this will not attach securely to a M9 mount.
Don't pay "New" Price for "Used" knife
Review by Natalea Q.
Verified Buyer
I ordered this item thinking I would get a new unused bayonet with green handle and scabbard but received a used one with black handle and scabbard. I was happy to pay $105.05 when I thought I'd be getting what I ordered. If I wanted a used knife I would've ordered one and not paid $105 for it. Not impressed.
great knive!!
Review by Timothy A.
Verified Buyer
this is a very very strong knife is rough, for military use, but can be used as a survival knife, very durable but simple finish, has a very thick blade steel excellent, but difficult to sharpen, which means it is hard to blunt. something heavy.
Combat Bayonet/Knife--One of the best
Review by Verlon N.
Verified Buyer
Rarely do I rate a product 5 stars ,however, the Ontario M9 Bayonet is the real deal. As an Army Vet and die heart hunter I only buy what can survive in the toughest conditions. This bayonet is sharp and extremely durable /applicable as a combat hand to hand knife or a solid bayonet for my Mossberg 590A1 Shotgun or on an AR 15 platform. The sheath with the knife works as a wire cutter if needed. If you've been trained to handle/deploy a bayonet this is certainly a top choice/tool you should consider for your TA Gear.
Badass MoFo!!!
Review by Angelina F.
Verified Buyer
This thing is badass it looks great on my AR. Ontario in my opinion beats SOG, KA-BAR, and Gerber!!! It's beafy, sturdy, looks and feels good in my palm, everything you want in a knife. Will Buy another. And would recommend to a friend!!
The best blade I've ever owned!
Review by Nocole O.
Verified Buyer
There is only one brand to look at when it comes to buying good quality, strong, durable knives... Ontario Knife.

I picked this up in December of 2010, spent about 30 minutes putting a good edge on it, and have used it incessantly ever since. Yes, 30 minutes to sharpen it, with a comnination of stone nad diamond embedded stell hones... that itself says that the steel is excellent. A Cheap knife will sharpen in 5 minutes, but will lose it's edge quickly also. You will love the weight of this Bayonet! It mounts easily on my AR-15 (when I hunt hogs at close range, it's a nice close range weapon) and the sheath attaches well and sure to my pistol belt, vest, pack, wherever there is an Alice or Molle spot free.

You can look at other brands such as Smith and Wesson, SOG, etc.. but the extra cost for hte Ontario is definitely worth it. I have some S&W and SOG knives, and I'd take my one Ontario M9 Bayonet over 1/2 dozen others into the field.

Yes, the wire cutter functions perfectly on barbed wire and horse fence, and a small web strap with velco will ensure that it's secure against your leg when hung on a pistol belt. THIS IS THE ONE TO BUY!
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