Griffin Armament 3L1351LH | 3-Lug Adapter | 9mm

This Griffin Armament 3-Lug adapter (model 3L1351LH) provides an HK-pattern interface for mounting compatible 3-lug silencers to 9mm Luger barrels threaded M13.5×1 left-hand. Constructed from 17-4 stainless steel and finished with Black Melonite QPQ, the adapter is engineered for secure, repeatable alignment with any 3-lug silencer made to the HK pattern, and is compatible with Griffin 3-lug interface assemblies. Its compact 1.43″ length keeps overall profile low while providing solid engagement with the host barrel.

Product Specifications

• The model is 3-Lug.
• The finish is Black Melonite QPQ.
• The material is 17-4 Stainless Steel.
• The overall length measures 1.43 inches.
• The product type is Adaptor.
• The subcategory is Muzzle Devices.
• The fit/thread specification is M13.5×1 LH.
• The intended chambering listed is 9mm Luger.
• The adapter uses an HK-pattern 3-lug interface.
• Compatibility is listed as Works with HK-pattern 3-lug silencers and Griffin 3-lug interface assemblies.
• The manufacturer’s part number is 3L1351LH.
• The UPC is 791154082072.

This adapter is a straightforward solution for shooters who need a robust, low-profile method to mount HK-pattern 3-lug silencers to left-hand threaded 13.5×1 barrels. Its 17-4 stainless construction and Black Melonite QPQ finish offer corrosion resistance and service life suitable for regular range use and competition settings where repeatable alignment and low profile are valued.