The KGM R556A1 (brand part no. RS-R556A1-QD-FDE) is a compact suppressor rated for 6mm/5.56 NATO, designed and tested to meet and exceed SOCOM durability standards. KGM Technologies builds the R556A1 from nickel alloy and stainless steel with a quick-detach mount, and finishes it in FDE. The R556A1 favors AR-platform shooters who want a SOCOM-grade suppressor with minimal impact on their rifle’s operating system.

Key Specifications

• Rated for 6mm/5.56 NATO for AR-platform sound suppression.
• Built from nickel alloy and stainless steel to meet SOCOM durability standards.
• Uses a quick-detach (QD) mounting system.
• Threaded 1/2×28 for compatible muzzle devices.
• Finished in FDE for a tactical appearance.

Frequently Asked Questions

Is this an NFA item? Yes. As a suppressor, it’s a Title II firearm requiring an approved ATF Form 4 and transfer through an NFA-licensed dealer.

What caliber is it rated for? 6mm/5.56 NATO.

How does it mount? Via a quick-detach (QD) system.

Buy the KGM R556A1 Suppressor

This is a Title II item regulated under the National Firearms Act. Purchase requires an approved ATF Form 4, no federal transfer tax, and transfer through a licensed NFA (SOT/Class 3) dealer, with an extended federal approval wait before delivery. Order through KGM Technologies‘s silencers and suppressed firearms lineup and our Lubbock, Texas team will walk you through the transfer process.