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Posted: 12/21/2015 12:32:06 AM EDT
| I have recently purchased a smith & wesson m&p 15t and I am progressing in customizing it to my dream gun. The final touch I would like to see on it would be a bayonet. I am currently having trouble figuring out how I can go about attaching one on. Has anyone with the same rifle put one on? If so can you please help me? Or does anyone know how to do so? Thank you for your time. |
Here's a fixed front sight with a bayonet lug at the bottom, below the barrel of my USGI M-16A2 rifle upper half. 
M7 type bayonets are attached to the bayonet lug at the bottom of the fixed front sights, note the large bayonet is a OKC3S USMC bayonet, the rest are all M7. I'm not sure if your S&W AR have a fixed front sight or a free floating rails, if you don't have a fixed front sight with a bayonet lug at the bottom of the barrel, you can't attach a bayonet. |
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bayonnet won't work with the M&P 15 like it will with an M16 or M4. Problem being that the 16"barrel extends further past the front sight (and therefore any bayonnet lugged front sight post you'd be attaching) than a 14.5" military lengh barrel.
The M9 bayonet is meant to fasten to the lug under the front sight, and around the flash hider. The front portion of your barrel is most likely too long, and the bayonet will be attached around the barrel itself and not the hider |
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The fine folks at Triple R Products make an adapter that takes up the extra two inches of barrel that make putting bayonets on civilian guns problematic. The tightening screw makes it a rock solid platform for the bayonet. What makes it extra nifty is that it even lets you mount bayonets on .300 Blackout rifles.
Realistically, though, putting a bayonet on an AR is Mall Ninja stuff, but it does piss off the liberals so that's good enough for me. 
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