Dual-Lok
Griffin Dual-Lok HRT-556 AM
The Griffin Dual-Lok HRT-556 AM is a rifle suppressor rated to 5.56mm, built from stainless steel and mounting by quick detach on the Dual-Lok system. It is a flow-through design measuring 6.44 inches long and 1.5 inches in diameter, weighing 16 oz. As published, it is full auto rated, but not user serviceable or modular, and it is made in the USA. Griffin notes a 36.6 dB figure for it, one of only 88 entries here with a published number, and dB ratings are manufacturer-reported and not directly comparable across brands. Measured against the 65 5.56mm-rated suppressors in the index, it lands in the heaviest quarter for weight (16 oz), on the longer side for length (6.44 in), and on the pricier side for price ($870). The closest listed comparison is Griffin M4SD-3 AM, the same brand's 5.56mm-rated can, priced at $870.
| Series | Dual-Lok |
| Type | Flow-Through |
| Form Factor | Rifle |
| Max Caliber | 5.56mm |
| Mount Type | Quick Detach |
| Mount System | Dual-Lok |
| Diameter (in) | 1.5 |
| Length (in) | 6.44 |
| Weight (oz) | 16 |
| Material | Stainless Steel |
| Full Auto Rated | Yes |
| Modular | No |
| Serviceable | No |
| Manufacturer Noted dB Reduction | 36.6 |
| Country of Manufacture | USA |
| Average Price | $870 |
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