• HK Style 3-Lug Adapter
  • Swiss lathe produced
  • Allow the use of 3-Lug systyle quick-detach muzzle devices and suppressors

*Not Intended for applications larger than 9mm diameter bullets.


  • Material: Steel
  • Finish: Black Nitride
  • Weight:
    • 1/2"x28 and 1/2"x36: 0.74 oz.
    • 5/8"x24: 1.59 oz.
  • Length:
    • 1/2"x28 and 1/2"x36: 1.5"
    • 5/8"x24: 2.35"
  • Outer Diameter:
    • 1/2"X28 AND 1/2"X36: 0.588"
    • 5/8"x24: 0.811"
  • Inner Diameter: 0.464"
  • Thread: 1/2"x28, 1/2"x28, and 5/8"x24 TPI


  • Barrel threaded in 1/2"x28, 1/2"x36, or 5/8"x24 TPI


The Kaw Valley Precision HK 3-LUG adapter is designed to fit applications that use the popular HK pattern 3-Lug suppressor interface. The 3-lug adapter is manufactured to rigid ID and OD tolerances and will work with firearm calibers up to 9mm in diameter.

Quality Construction

The concentricity of the inside and outside diameter surfaces is paramount in the construction of any muzzle accessory adapter. In order to meet these precise specifications, the Kaw Valley tri-lug adapter is cut from high tinsel-strength steel on a high-tolerance Swiss lathe and meticulously checked for consistency. The adapter weighs less than an ounce so it adds only minimal weight to the gun and a black nitride QPQ finished provides for long service life.

Quick Mount and Detachment

The Kaw Valley tri-lug adapter is designed for use with three-lug style quick-detach muzzle accessories and allows for quick and convenient one-hand mounting and removal of the suppressor. Once the adapter is in place, the suppressor is easily installed or removed with just a twist of the wrist.

Small Caliber Compatibility

The Kaw Valley 3-lug adapter will work on smaller caliber firearms up to and including 9mm rounds, but it is not designed for use with calibers larger than 9mm.

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