The Eotech 517 is one of the new additions to the EOTech line. The EOTech 517.A65/1 sight is nearly identical to the 512 sight with two important differences. First, the control buttons are placed on the side of the sight, allowing you to more naturally make adjustments while keeping your rifle shouldered. The side control buttons also make using the sight easier when combined with magnifiers or other accessories.
Secondly, a portion of the front of the base of the EOTech 517 sits 7 millimeters higher, permitting you to attach the sight over the handguard of M4 and AR15/M16 fifles. (See photo)
Twenty brightness levels ensure proper brightness control in either low light or very bright sunlight. An on-board microprocessor provides automatic battery check indicator, up/down brightness scrolling and programmable auto shutdown features. All electronics are fully encapsulated in shock absorbing resin compound.
Eotech 517 Sight Operation:
Optics: Transmission holography - 100% parallax free
Magnification: 1x unlimited eye relief
Temperature:-40 to 150F (AA lithium batteries), -20 to 140 F (AA alkaline batteries)
Sealing: Waterproof (submersible) & fogproof
Color/Finish: Non-reflective black with hard coat finish
Adjustment (per click): 0.5" at 100 yards
Adjustment Range: +/- 40 MOA travel
Mount: 1" Weaver dovetail/Picatinny rail (Mil spec 1913)
Return to Zero: Repeatable to 1 MOA after remounting
Eotech 517 Sight Heads-Up Display Window
Optical Surfaces: Anti-glare coatings
Window Dimensions: 1.20" x 0.85" (30 x 23 mm)
Front Window Material: 1/8" glass
Rear Window Material: Shatterproof laminate (3/16" thick)
Field of view (100 yards): 30 yards (28m) at a 4" eye relief
Standard Reticle: 65MOA ring with quadrant ticks with a 1MOA Aiming dot
Reticle Contrast Ratio: 28,000:1 brightest to lowest
Eotech 517 Sight Electrical Specificatons:
Power Source: 2 1.5 volt AA batteries (lithium, alkaline or rechargeable)
Battery Life: 1000 hours at nominal setting 12, 600 hours continous with AA alkaline battery
Brightness Settings: 20 settings with scrolling feature
Auto Battery Check Indicator: Flashing reticle upon startup if
batteries are at 20% of battery life.
Auto Shutdown: At 8 hours - programmable to 4 hours
General Specifications:
Waterproof & Submersible To 33 ft depth
Battery Life (setting 12) 1000 hours continuous (lithium), 600 continuous (alkaline)
Length: 5.7"
Reticle 65 MOA ring with 1 MOA dot
Weight: 8.8 ounces (250 grams)
Warranty: 2-Year warranty