509T-X2
The Holosun HE509T-GR X2 is an enclosed emitter pistol optic on the Proprietary / RMR footprint, offered with a 2 MOA Dot & 32 MOA Circle reticle in green. The window measures 0.66 x 0.9 in, and the titanium housing measures 1.6 x 1.6 x 1.13 in and 1.72 oz. It runs on a CR1632 cell that can be changed with the optic still mounted, and adds shake awake, solar failsafe, and night vision settings. Measured against the 311 pistol optics in the index, it lands in the heaviest quarter for weight (1.72 oz), about in the middle for window area (0.594 sq in), and in the most expensive quarter for price ($485). It is one of 6 entries in the index that qualify as a Proprietary / RMR footprint optic. The closest listed comparison is Holosun HE509T-GD-X2, the same brand's Proprietary / RMR footprint optic, priced at $485.

| Series | 509T-X2 |
| Reticle color | Green |
| Reticle options | 2 MOA Dot & 32 MOA Circle |
| Optic Removal for Battery Change | No |
| Window Size (in) | 0.66 x 0.9 |
| Enclosed | Yes |
| Footprint | Proprietary / RMR |
| Battery | CR1632 |
| Solar Failsafe | Yes |
| Shake Awake | Yes |
| Night Vision Compatible | Yes |
| Material | Titanium |
| Weight (oz) | 1.72 |
| Dimensions (in) | 1.6 x 1.6 x 1.13 |
| Country of Manufacture | China |
| Average Price | $485 |
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