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AR-15 Bayonet Barrel Adapter


5.00 out of 5

The Tacticool22 Bayonet Barrel Adapter prevents a bayonet from rattling around on your rifle’s barrel, and works on 16″ barrel AR-15’s with carbine length gas systems.

SKU: BAYADPT-AR15 Categories: , Brand:

At less than an ounce, this adapter is very lightweight, and fits standard 3/4″ barrels with 1/2-28 threads, such as the S&W M&P15 in .223/5.56. It is also easy to put on. Just remove your flash hider and crush washer, slip on the adapter and add a new crush washer, and then screw on your flash hider or other muzzle device.

Bayonets that will work include the M7, M9, M10, M11, and USMC OKC-3S.

Features and Benefits

  • Made from aircraft-grade aluminum.
  • Flat black, hard-coat finish.
  • Anodized to Type III Mil-Spec for a long service life.
  • Designed, developed, and manufactured in the USA.

Note: You will need to purchase the crush washer separately.

Weight 0.188 lbs



Black Oxide

Firearm Compatibility




3 reviews for AR-15 Bayonet Barrel Adapter

  1. 5 out of 5

    (verified owner):

    Easy to install. Well machined with good tolerances. Worked exactly as advertised. Highly recommend. I put this on a Colt AR-15 16″ with a M9 bayo. Fit like a glove.

  2. 5 out of 5

    (verified owner):

    Just received the AR-15 Pattern Rifle Bayonet Barrel Adapter. It was simple to install and exceeded my expectations. Their is absolutely no rattle at all when my bayonet is installed on my Bushmaster AR-15. I am very pleased with it and would give it 6 stars if it were possible!

  3. 5 out of 5

    (verified owner):

    I couldn’t have asked for a simpler, easy to install addition to my rattling bayonet on my m4. This bayonet adapter has perfect tolerances and fits exactly as described. Thank you for making a exceptional product. This is a must have for anyone with a carbine length handguard.

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