Griffin Armament DUAL-LOK HRT-556 | FDE

The Griffin Armament DUAL-LOK HRT-556 is a compact suppressor developed from technology used by elite HRT units and released for commercial sale. It employs the patent-pending DUAL-LOK active retention system for a repeatable, wear-resistant interface and a low-profile, flash-reducing end cap with ECO-FLOW tuned baffles. The unit is constructed from high-temperature materials and finished in FDE Cerakote.

Common applications for this suppressor include precision/long-range rifle work and range training where reduced flash and lower back-pressure improve shooting consistency. It is full-auto rated and ships with a DUAL-LOK Minimalist Brake.

Product Specifications

• The diameter is 1.5 inches for a compact profile.
• The overall length is 5.9 inches.
• The length added is 4.5 inches when using the included Minimalist Brake and 3.5 inches when using longer muzzle devices.
• The weight is 14.4 ounces.
• The materials are 17-4PH Stainless Steel & 718 Inconel.
• The attachment system is DUAL-LOK Mounts providing a wear-free mounting interface.
• Included in the box is a DUAL-LOK Minimalist Brake 1/2×28 5.56mm muzzle device.
• The suppressor is rated for calibers up to .22-250 REM.
• There are no minimum barrel length restrictions for rifle calibers with this suppressor.
• The finish is High Temp Cerakote (FDE).
• This model is full-auto rated.
• The product carries a Perpetual Lifetime Warranty.
• The UPC is 689396838390.

Engineered for compactness without sacrificing durability or performance, the DUAL-LOK HRT-556 brings Griffin Armament’s ECO-FLOW baffle tuning and low-flash end cap to a short-profile package. The DUAL-LOK interface minimizes point-of-impact shift and avoids consumable mounting parts, while the heat-treated and Cerakoted body resists corrosion and wear. For users prioritizing a low flash signature, reduced back-pressure, and a robust mounting system, this suppressor balances those needs in a compact form factor.