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This model of ATN Red Dot Sights is discontinued and no longer available. Please take a look at our wide selection of other Red Dot Sights on our site.
| Magnification: | 3.1x nominal | |
| Length: | 135mm nominal | |
| Width: | 65mm nominal with bumpers | |
| Height: | 77mm nominal with bumpers | |
| Weight: | 415g nominal | |
| Illumination source: | Battery-powered LED | |
| Illumination settings: | 11 visible, 3 night vision | |
| Reticle: | Dual-thickness crosshair with Rapid Aiming Feature and range finder | |
| Eye Relief: | 66 mm | |
| Field of View: | 6 degrees | |
| Exit Pupil: | 8 mm | |
| Fixed Focus Range: | 20m to infinity | |
| Battery Type: | CR 123 (3v Lithium) | |
| Battery Life: | 3.1 years average | |
| Exterior Finish: | Black anodized aluminum | |
| Ballistic calibration: | ||
| Model A: | 5.56 NATO (in reticle) | |
| Model B: | 100m-600m external adjustment for 5.56 or 7.62 NATO (others available) | |
| Adjustment resolution: | 0.5 minute of angle | |
| Adjustment range: | 120 minutes of angle | |
| Base requirement: | Mil-Std-1913 'Picatinny Rail' or AR15/M16 carry handle | |
| Attachment: | Single wing nut with return-to-zero repeatability | |
| Environmental: | ||
| Waterproof: | 66 ft for 2 hours min | |
| Shockproof: | 450 g's | |
| Options: | Rubber bumpers, Mil-Std-1913 rails, lens covers, ARD | |
ATN SpecterOS 3.0 3x Combat Optical Sight ATOS3 w/ Rapid Aiming Feature R.A.F. reticle 5.56 ballistic RAF reticle with mount
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ATN SpecterOS 3.0 3x Combat Optical Sight with 5.56 RAF reticle