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Ontario 490 M9 Bayonet System (Green)

4.4 out of 5 stars 46 customer reviews
| 6 answered questions

Price: $103.09 & FREE Shipping. Details
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  • Made of 420 Modified Stainless
  • 7 inch plain edge blade
  • Knife Closed Length: 3.79-Inch
  • Knife Open Length: 12.25-Inch
  • Weighs 16 ounces
49 new from $103.09

$103.09 & FREE Shipping. Details In Stock. Ships from and sold by Amazon.com. Gift-wrap available.

Frequently Bought Together

  • Ontario 490 M9 Bayonet System (Green)
  • +
  • Ontario 6504 OKC3S Marine Bayonet (Brown)
  • +
  • Bayonet Ring Adapter
Total price: $222.02
Buy the selected items together


Product Description

The Ontario Knife 490 M9 Bayonet and Scabbard in olive drab green is current issue to the U.S. military. Situated in New York State's scenic Southern Tier, Ontario Knife Company produces one of the most comprehensive, wide-ranging product lines in the cutlery industry today. While being a worldwide supplier, the Ontario Knife Company is also a major supplier to the U.S. Government and its military. Ontario has built its reputation on a heritage of uncompromising craftsmanship, quality materials and components, and a steadfast commitment to its workforce. Modified stainless steel blade with milled sawteeth on back. Black oxide non-reflective finish. Textured thermoplastic nylon handle. Fits M16, M4 and AR-15. Includes M9 scabbard with quick release holster made of thermoplastic nylon that includes wire cutter and screwdriver.

Product Details

  • Product Dimensions: 15.5 x 3.5 x 3.8 inches ; 15.2 ounces
  • Shipping Weight: 1.6 pounds (View shipping rates and policies)
  • Domestic Shipping: Item can be shipped within U.S.
  • International Shipping: This item is not eligible for international shipping. Learn More
  • Origin: USA
  • ASIN: B000Q9F7LM
  • Item model number: 6220
  • Average Customer Review: 4.4 out of 5 stars  See all reviews (46 customer reviews)
  • Amazon Best Sellers Rank: #103,060 in Sports & Outdoors (See Top 100 in Sports & Outdoors)
  • Manufacturer’s warranty can be requested from customer service. Click here to make a request to customer service.

Customer Questions & Answers

Customer Reviews

Top Customer Reviews

Verified Purchase
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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I broke 2 of these that were issued to me while I was in the military. One was strapped to my web belt and ir snapped at the tang when I landed on it parachuting,, the other snapped at the tang when it was in the bottom of a bag dropped out of truck when unloading.

They are too heavy and bulky for what they do - too fragile as a bayonet, useless as a chopper, terrible rounded slippery grip awful for stabbing, useless for finer utility work.

My unit stopped using them for bayonet trg because they kept breaking and went back to the M7 - a much better choice if you actually intend on having a tool for driving into people.

If you want a good value, unbreakable man stabbing fighting knife, get the cold steel recon tanto. Plus, you have the same amount of penetration depth, full tang toughness and a much lower profile design so you can conceal it easily if needed.

If you want a good value, unbreakable man chopper/awesome do-all survival tool, get an Ontario kukri and get a kydex sheath made for it.

If you want a fantastic fighting folder, spend the bucks and get a zt 350.

If you want a bayonet for your AK, get a commblock one. I have a Bulgarian Circle 10 one and it excellent if you have an ak74 style brake. If you want a stabber on the end of your AR or Mossberg, get an M7.

If you are buying a tool that you are going to trust your life to, whatever you do, don't get one of these.

I don't understand knife guys who write reviews gushing over the fit and finish and cosmetics of a bayonet. Its meant to be something sharp, durable and functional to drive in to a man's heart - that's it.

If you mount one, check any change to zero due to different harmonics.
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This is a solid military specification bayonet. Anyone who has spent anytime collecting or purchasing a contracted model design over a period of years between the same manufacturer or different manufactures knows there can be significant to slight differences in quality and appearance. The M9 is no exception in my experience with military items. Is there better in the M9? Yes, I can not argue against the BUCK made M9, but more than likely you will pay premium price for what I would call the perfect M9 example. Then there is Lan-Cay which appears to me to fall into and with Ontario, but you will find that slight quality difference in years compared to others. No, not going into each manufacturer, but still want to briefly touch on my reasoning for this review. Functionally, most, if not all will do the job and it comes down to current production new, new old stock, or used and your price point. Certainly there are the china knock-offs, but if you want the real deal and something that will hold value, reliable, and proven - go authentic military issued. I would also recommend supporting US made products if at all possible. Some of the past Lan-Cay seem to have a better finished look - yet some do not. Ontario seems to fit the same ups and downs in the cosmetic department. I have not even come close to owning all years or sampled production runs, but the Ontario I just purchased new seems to be about or a hair above average. The blade is nice overall, but you will see the milling marks (lined scratches) running deeper. The mfg markings move up and down a little and on some, the USA is not completely visible (per other pictures). Now, the black finish on the blade appears weak. Right out of the box, there is wear marks and handling oops - marked up and missing finish.Read more ›
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This is the exact make / model bagonet that I was issued when I was emlisted in the U.S. Army which is why I ordered it. Through my years of service, this knife never failed to impress me. It once got my hummer unstuck from a roll of C wire wrapped around the front wheel by using them as. wire cutters with the sheath. The only reason I'm not giving this item 5 stars is because it didn't come very sharp and required sharpening.
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