KGM R556A1 QD Suppressor, 5.56mm, Black

The KGM R556A1 (brand part no. RS-R556A1-QD-BLK) is a compact 5.56mm quick-detach suppressor engineered to meet and exceed SOCOM specifications for full-auto firing, accuracy, repeatability, sound suppression, and minimal impact on a rifle’s operating system. KGM designed the R556A1 to work on 5.56 rifles of every barrel length, with best performance on 14.5-inch and longer barrels, and the suppressor has passed over 20 SOCOM SURG firing cycles in testing. The R556A1 favors shooters who want a proven, duty-grade 5.56 suppressor built for hard use.

Key Specifications

• Rated for 5.56mm / .223 Remington rifles.
• Threaded 1/2×28 with a quick-detach mount.
• Tested to over 20 SOCOM SURG firing cycles for durability under sustained full-auto use.
• Finished in black.

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? 5.56mm / .223 Remington.

What barrel length works best? It works on any 5.56 barrel length, with best performance on 14.5-inch and longer barrels.

Buy the KGM R556A1 QD Suppressor, 5.56mm, Black

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.