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Smith & Wesson Special Ops M-9 Bayonet 7.8in Fixed Blade Knife
As Low As $104.79 Save Up to 40%
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Most Helpful Positive Review Bayonet Fit and Function
I originally ordered an M-7 Bayonet off eBay and I was not satisfied with the quality. I then searched for alternatives and found this Bayonet on the Optics Planet website. Turns out this specific Bayonet, the M-9 fits on a Mossberg 590 Shotgun and other sporting rifles with the proper adapters to ensure proper fit. The quality is superb and blows away the competition i.e., the M-7, for a more reasonable price. It also comes with the scabbard that is designed for the M-9 military version. If you're searching for that perfect add-on to your firearm, this product will more than adequately meet y...
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Bayonet Smith & Wesson

by Jo2270, Verified Owner from SC, United States Written on February 20, 2025
This is a quality knife from S&W. Feels great in the hand. Weight for a bayonet is good. I am sure it would do what bayonets would do. I qualified expert with bayonet in the ARMY . Not saying much though. Have not used the wire cutter because I have not run across any barbed wire or concertina razor wire whilst I adventure around town.
Would recommend: Yes
Was it helpful to you? Yes | No

Solid m9 knife

by Ahnold, Verified Owner from GA, United States Written on October 13, 2024
If you want a classic m4 look, buy the knife. It's impeccable. Sharp, fits tight. Completes the rifle 100%.
Would recommend: Yes
Was it helpful to you? Yes | No

Why would you not have one?

by Staycalm, Verified Owner from TX, United States Written on June 24, 2024
Fricking awesome! Still waiting on my supper stabby attachment so I can put it on the home defense weapon of my choice . Tested it out on a friends m16 style gas block and it held in place good!
Best Used for:
  • Close 1/4 home defense/having loads of fun
Would recommend: Yes
Was it helpful to you? Yes | No

Sharp, pointy and does the job

by Knifey McKniferson, Verified Owner from VA, United States Written on May 13, 2024
Bought the non-clamshell pack and saved the money.

Good:
Sharp
Pointy
Serrated rear is nice
M9 bayonet style
Whetstone mounted to hardshell
Hardshell scabbard is very easy to unclip from belt
Longer knife

Bad:
Wire cutter is extremely tight and marred the finish. Previous knife wire cutters I have had were not so tight. Break in will, I'm sure, help.
The bayonet mount ring is a little large- perhaps by design. When mounted to my rifle via Geissele's super stabby bayonet mount (don't judge, had to try it out) there is play which leads to rattle.
The hilt is a little, for lack of better terms, wanting in the girth area. Additionally, the hilt itself has multiple sharp edges and isn't entirely comfortable. Nothing a little hockey tape won't take care of but definitely disappointing.
Front heavy

Overall, not a bad alternative to the Ontario if you're looking for a bayonet mount knife, just have to take the bad with the good. It's a knife that'll do knife things, plus looks menacing mounted on a rifle. Would I buy it again? Sure thing, though it would have to be on sale.
Would recommend: Yes
Was it helpful to you? Yes | No

Big scary knife

by Duke, Verified Owner from IN, United States Written on April 21, 2024
There is something to be said for having a big scary knife in a self defense or survival situation. So this ticks all those boxes. As a bayonet, it is heavy AF. It will do the trick, but you better do some serious training to get ised to the weight.
Would recommend: Yes
Was it helpful to you? Yes | No

Satisfied Customer

by Perry G, Verified Owner from IL, United States Written on March 6, 2024
I was so impressed with the quality of this Bayonet Knife that I ordered 2. After receiving this item, I was able to confirm the quality firsthand. I was not disappointed at all. High quality, exceptionally manufactured Bayonet Knife. Would highly recommend this product to anyone looking for a Bayonet to use as a stand-alone knife or to fit to your specific rifle that can accept a Bayonet of this type.
Pros:
  • Great product & price
Cons:
  • No cons - in my opinion!
Best Used for:
  • Hunting self defense
Would recommend: Yes
Was it helpful to you? Yes | No
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Last updated 2025-11-12 UTC.