AR-15 9mm Carbine Buffer Tube Kit

(2 reviews)
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KAK Industry AR15 9mm Carbine Buffer Tube Kit

The KAK Industry 9mm carbine buffer tube kit includes everything you need for the receiver extension on your 9mm AR15 carbine or pistol.

  • Mil-Spec diameter buffer tube - hard coat anodized
  • Music wire carbine buffer spring
  • 9mm buffer - 5.4oz
  • Mil-Spec castle nut
  • Mil-Spec end plate
Buffer Tube:
Buffer Weight:
9MM Carbine


  • 5
    good stuff

    Posted by andrew on December 5, 2022

    behind my fm9 7.5 barrel and cycles perfect after 200 rounds.

  • 5
    Works Great

    Posted by KK on February 18, 2022

    Bought this for a direct blow back system. I prefer the lower buffer weight in this application however I also use a buffer spacer. Bought the Spikes Tactical Buffer spacer (separate purchase) and in this configuration the AR9 has functioned perfect now for about 600 rounds. It might have run fine without the buffer spacer, I've just used this same sized buffer with a spacer before and had great results so I didn't even try that. I just wish KAK would build their own spacer, everything else it top quality so I'm sure it would be too. Would definitely buy this buffer package again!