AAC Style Base Knurled Back

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Current Stock:

Replacement shroud tube and back plug.

Shorter one will fit all weapons that have 4-3/4" of barrel to cover with no obstructions

Longer one will fit all weapons that have at least 5-5/8" of barrel to cover with no obstructions

For the shroud to fit inside your hand gaurd/rail the opening of your rail must be at least 1-1/2" inside diamter.


We suggest the following for you gun as long as they meet the above specs also


  • Standard carbine AR (can be short also)
  • MP 15/22 that has a THREAD ADAPTER installed on an non threaded barrel ( Perfect fit for these guns with adapters. fits tightly inside the front dust cover area**)



  • Standard carbine AR (can be longer also)
  • MP 15/22 with threaded barrel (PERFECT length for these guns)



Sizing Tips Video


  • 5
    Knurled Back

    Posted by Steve on 15th Nov 2022

    This item was lightweight and beautifully machined. Value is outstanding also. Kineti-tech is far and away the best site for purchasing barrel shrouds...and I've purchased a few over the years.

  • 5
    Nice for a trainer rifle

    Posted by Stuart Boyer on 1st Sep 2017

    5-5/8 " Is the perfect size to fit on a M&P 15-22 Sport model and stops just shy of touching the hand guard end cap. The tube is a bit shiny so I plan to dull the color with Krylon paint but the added weight is perfect to add to my rifle to make it a better trainer. Plus the looks are awesome.