The Maxim DSX-HQD 5.56 NATO suppressor pairs the DSX series core with Maxim Defense’s quick-detach mounting system, and this black version ships as the QD suppressor system with a flash hider (Maxim part no. MXM-48046). Maxim designed it for firearms with barrels under 10.3 inches, its own PDX included, and rates it for full-auto fire on barrels 5.5 inches and above. The patented M-Kore design uses a 17-4 stainless steel core inside a Grade 5 titanium tube. Maxim says its QD suppressors are SOCOM-tested and UTM-safe, and the can remains fully serviceable.

Key Specifications

• The caliber rating is 5.56 NATO, matched to AR-15 rifles, carbines and short-barreled hosts.
• Overall length is 7.9 inches and weight is about 21 ounces, as Maxim lists them.
• The tube is Grade 5 titanium over a 17-4 stainless steel core, Maxim’s construction for its DSX line.
• Mounting is the 1.375-24 HUB interface with the Maxim QD system, and a QD flash hider is included.
• Maxim rates it full-auto on barrels 5.5 inches and above, so it suits very short 5.56 hosts.

Frequently Asked Questions

Does this 5.56 DSX-HQD include a flash hider? Yes. This is the QD suppressor system configuration, which Maxim ships with the QD suppressor and a flash hider.

Do I need ATF approval to buy this? No. As of October 9, 2026, ATF no longer requires Form 4 approval, registration or a tax stamp for suppressors. It transfers on a Form 4473 with a background check through a Class 3 (SOT) dealer. State and local laws still apply.

Buy the Maxim Defense DSX-HQD Suppressor, 5.56 NATO

As of October 9, 2026, this suppressor transfers on a Form 4473 with a background check at your Class 3 (SOT) dealer, with no Form 4 or tax stamp; state and local laws still apply. Order through Maxim Defense‘s silencers and suppressed firearms lineup and our Lubbock, Texas team will handle the transfer.