HK 3 Lug Adapter Flash Hider

(4 customer reviews)




This 3 Lug adapter is slotted to induce flash suppression. The nose and peripheral milled slots have been specifically shaped to actively remove carbon buildup from the inside diameter of your suppressor’s 3 Lug mount each time the suppressor is installed or removed. These 3lug adapters are also 25% lighter than our standard 3 Lug adapters.

Our HK type 3 Lug adapters are ideal for pistol caliber suppressor mounting. They are perfect for use with calibers 9mm and smaller (9×19, .300blk, .380acp, etc…). Machined to HK specs this adapter mates with the 3 lug mounts made by all of the major US manufacturers of suppressors (including: Silencer Co, Liberty, Gemtech, AAC, DeadAir, Rugged and more). These adapters are machined from chromoly steel and finished in black nitride. Please select your barrel thread type from the drop down box above.

  • Flash Hider Integrated 3 Lug Adapter (HK Type, 15mm Nominal Nose OD)
  • Slots Scrape Carbon from ID of Suppressor Mounts
  • Length 1.43″, Thread Depth .50″
  • Weight is 0.63 oz
  • Machined from Chromoly Steel
  • Nitride Finish (Melonite)

Designed and Manufactured completely in USA.

Gunsmith Installation Recommended for All Parts.

Additional information

Thread Type

1/2-28, 1/2-36, M13.5×1 LH, 5/8-24

4 reviews for HK 3 Lug Adapter Flash Hider

  1. Vaughn Mongan (verified owner)

    The problem with this is that when used with a suppressor, the blast causes carbon to build inside whatever mount you’re using and basically seizes the whole works. Nicely made product but should not be used probably ever.

  2. Greg

    This Tri-Lug F.H. is the bee’s knees! I’ve been running this on my Stribog with My 9mm AAC TriRant.
    Out of approximately 3,000 rds it is holding up great. Never have had a problem with carbon building up and causing any issues with removing my suppressor as needed.
    I will definitely keep these Tri-Lugs on my need list for any 9mm builds or buys in the future.

  3. Martin (verified owner)

    Very fast service. Installed on a Ruger PC works great fit and finish very good. Will deal with the company again in the future.

  4. Kevin (verified owner)

    Looks really nice and machined perfectly. It fit my Dead Air Ghost-M with 3-Lug adapter with no problems.
    Unfortunately I too had an issue with my can getting stuck due to carbon build up after 100 rounds. It seems the flash hider ports allow build up that locks the inside of the 3-lug adapter to the muzzle device.
    I’m giving this 3 stars but machining, looks, and fitment are all top notch.

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