This 3 Lug adapter features a HK pattern and will work with any 3 lug silencer on the market made to this standard. It will also work with Griffin 3 lug interface assemblies.
Specifications:

Caliber or Gauge
Length	1.43"
Model	3-Lug
Twist
Sights
Bore Type
Finish	Black Melonite QPQ
Type
Chokes Included
Choke Configuration
Barrel Type
Ammo Type
Barrel Features