The Yankee Hill Machine R45 is a suppressor rated to .45 ACP, built from stainless steel and mounting by direct thread in 5/8x24. It measures 6.45 inches long and 1.563 inches in diameter, weighing 13 oz. As published, it is full auto rated, but not wet capable, user serviceable, or modular, and it is made in the USA. Measured against the 16 .45 ACP-rated suppressors in the index, it lands in the heaviest quarter for weight (13 oz), in the shortest quarter for length (6.45 in), and among the least expensive 10 percent for price ($675). The closest listed comparison is Yankee Hill Machine Sidewinder M2 45 ACP, the same brand's .45 ACP-rated can, priced at $625.

| Series | R45 |
| Type | Traditional |
| Form Factor | Multi |
| Max Caliber | .45 ACP |
| Mount Type | Direct Thread |
| Mount System | 5/8x24 |
| Diameter (in) | 1.563 |
| Length (in) | 6.45 |
| Weight (oz) | 13 |
| Material | Stainless Steel |
| Full Auto Rated | Yes |
| Wet Capable | No |
| Modular | No |
| Serviceable | No |
| Country of Manufacture | USA |
| Average Price | $675 |
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