Griffin Armament 3L1351LH | 3-Lug Adapter | 13.5X1 LH

The Griffin Armament 3L1351LH is a HK-pattern 3-lug adapter intended for 9mm Luger firearms with 13.5X1 LH threads. It is machined from 17-4 stainless steel and finished in Black Melonite QPQ for corrosion resistance and long service life. The adapter accepts any 3-lug silencer built to the HK standard and also works with Griffin 3-lug interface assemblies. Typical applications include installation for range and competition use where a standardized 3-lug interface is required.

Product Specifications

• The manufacturer is Griffin Armament.
• The model is 3-Lug.
• The manufacturer’s part number is 3L1351LH.
• The product type is Adaptor.
• The fit/thread specification is 13.5X1 LH.
• The listing references 9mm Luger in the product name.
• The material is 17-4 Stainless Steel.
• The finish is Black Melonite QPQ.
• The overall length is 1.43 inches.
• The subcategory is Muzzle Devices.
• The adapter is HK-pattern and will work with any 3-lug silencer made to that standard.
• The adapter will also work with Griffin 3-lug interface assemblies.
• The product description identifies this item as a 3 Lug Adapter.
• The UPC is 791154082072.

This adapter provides a durable, standardized interface for mounting HK-pattern 3-lug silencers on compatible 9mm platforms. Its 17-4 stainless construction and Melonite QPQ finish offer corrosion resistance and wear tolerance for regular range and competition use. If you need a reliable, industry-standard 3-lug mounting solution, the 3L1351LH delivers a straightforward fit and long-term service life.