The Griffin Armament 3-Lug Coupler Kit (brand part no. GA9QDK) is a 9mm quick-detach interface assembly that lets shooters mount many Griffin suppressors onto HK-pattern 3-lug barrels with minimal added length. Griffin Armament engineers the kit’s spring-bushing deflection to require only minimal movement for installation, often negating the need to modify hand stops or grips positioned close to the adapter. Among Class 3 parts and accessories, this coupler kit favors suppressor owners who want fast QD mounting without sacrificing barrel compatibility.

Key Specifications

• Chambered for 9mm suppressor hosts.
• Uses a 3-lug quick-detach mounting interface.
• Fits H&K standard 9mm 3-lug adapters as well as Griffin’s own 3-lug adapters.
• Adds only minimal length to the mounted suppressor.
• Requires only minimal spring-bushing deflection for installation.
• Compatible with US-made RCM and Michael’s Machines barrels, as well as German HK-brand barrels.

Frequently Asked Questions

Which suppressors does this kit fit? Many Griffin Armament suppressors — check the individual suppressor’s product page for applicable calibers and ratings.

Does it require modifying my hand stop or grip? In most cases no, since the minimal spring-bushing deflection needed for installation avoids interference with hand stops and grips positioned close to the adapter.

Buy the Griffin Armament 3-Lug Coupler Kit

QD mounting with minimal added length is exactly what this coupler kit delivers for HK-pattern 9mm hosts. Order it from our Lubbock, Texas gun shop for fast, insured shipping.