SLx MD-25
Primary Arms SLx MD-25 Gen II
The Primary Arms SLx MD-25 Gen II is a red dot rifle optic at 1x magnification, using a 2 MOA aiming point in red. It ships on a fixed mount at Absolute Co-Witness or Lower 1/3 height (0.96, 1.41, 1.54, or 1.64 in optical centerline). It runs on a CR2032 cell and adds shake awake and night vision settings. The aluminum body weighs 6.5 oz. Measured against the 320 red dots and prisms in the index, it lands in the lightest quarter for weight (6.5 oz) and among the least expensive 10 percent for price ($180). It is one of 149 entries in the index that qualify as a red dot at 1x. The closest listed comparison is Primary Arms SLx MD-21, the same brand's red dot at 1x, priced at $180.
| Series | SLx MD-25 |
| Optic Type | Red Dot |
| Magnification | 1 |
| Reticle Color | Red |
| Reticle Size (MOA) | 2 |
| Solar Failsafe | No |
| Shake Awake | Yes |
| Night Vision Compatible | Yes |
| Enclosed | No |
| Battery | CR2032 |
| Optic Removal for Battery Change | No |
| Mount Type | Fixed |
| Mount Height | Absolute Co-Witness / Lower 1/3 |
| Mount Height (in) | 0.96 / 1.41 / 1.54 / 1.64 |
| Material | Aluminum |
| Weight (oz) | 6.5 |
| Average Price | $180 |
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