Griffin Armament GA9QDK 3-Lug 9mm Luger Muzzle Device - 17-4 Stainless Steel

The Griffin Armament GA9QDK is a 3-lug quick-detach muzzle device engineered for 9mm Luger rifles and carbines that need reliable, repeatable suppressor mounting. Built from 17-4 stainless steel with a 17-7 wire spring, this QD adapter delivers the durability demanded by both precision shooters and those running suppressed 9mm platforms in demanding conditions. If you're running a Griffin suppressor or looking for a robust quick-disconnect interface that plays well with H&K standard 3-lug adapters, this kit simplifies the job.

The 3-lug assembly adds minimal length to your setup—a real advantage if you're working with tight clearances near hand stops or grips. Griffin's design minimizes deflection of the spring bushing on installation, which often means you can avoid modifying your existing hand stops or rail-mounted accessories. The adapter works with H&K standard 9mm 3-lug specifications, and it's also compatible with US-made barrels from RCM and Michael's Machines, as well as genuine German HK brand barrels that follow those dimensions.

Built tough enough for full-auto applications, the GA9QDK is engineered for shooters who demand reliability under heavy use. Whether you're suppressing a 9mm PCC, an MP5 clone, or any rifle chambered in 9mm Luger with a compatible threaded barrel, this muzzle device gives you a solid, repeatable mount point that locks in tight and detaches cleanly when you need it to.

Key Features

• 17-4 stainless steel construction for corrosion resistance and longevity
• 17-7 wire spring for reliable, repeatable engagement
• Minimal length addition to suppressor and host rifle
• Compatible with H&K standard 9mm 3-lug specifications
• Works with Griffin suppressors and other 3-lug QD systems
• Designed for full-auto rated applications
• Low installation deflection reduces need for aftermarket grip or hand stop modifications
• Compatible with US-made RCM and Michael's Machines barrels, and genuine HK barrels

Specifications

Frequently Asked Questions

What suppressors does the GA9QDK work with?

The GA9QDK is designed as a quick-detach adapter for Griffin suppressors and other suppressors with 3-lug QD interfaces. For specific suppressor compatibility, check the individual suppressor product pages.

Is this compatible with my H&K MP5 or H&K-pattern 3-lug barrel?

Yes. The adapter is built to H&K standard 9mm 3-lug specifications and will work with genuine German HK barrels as well as US-made barrels from RCM and Michael's Machines that comply with those dimensions.

Will I need to modify my hand stop or grip for installation?

The GA9QDK's minimal length addition and low spring bushing deflection often eliminate the need for modifications to existing hand stops and grips that sit close to the muzzle area. However, clearance depends on your specific setup.

Is this rated for full-auto fire?

Yes. The GA9QDK is built heavy-duty and rated for full-auto applications.