M4SD
Griffin M4SD-L
The Griffin M4SD-L is a rifle suppressor rated to 5.56mm, built from stainless steel and mounting by quick detach on the GATE-LOK system. It measures 6.5 inches long and 1.5 inches in diameter, weighing 14.5 oz. As published, it is full auto rated, but not user serviceable or modular, and it is made in the USA. Griffin notes a 33.1 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 about in the middle for weight (14.5 oz), in the longest quarter for length (6.5 in), and on the pricier side for price ($945). The closest listed comparison is Griffin Dual-Lok PSR 5, the same brand's 5.56mm-rated can, priced at $910.
| Series | M4SD |
| Type | Traditional |
| Form Factor | Rifle |
| Max Caliber | 5.56mm |
| Mount Type | Quick Detach |
| Mount System | GATE-LOK |
| Diameter (in) | 1.5 |
| Length (in) | 6.5 |
| Weight (oz) | 14.5 |
| Material | Stainless Steel |
| Full Auto Rated | Yes |
| Modular | No |
| Serviceable | No |
| Manufacturer Noted dB Reduction | 33.1 |
| Country of Manufacture | USA |
| Average Price | $945 |
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