551.A65/1
NSN 1240-01-485-0441
A lighter, smaller version of the Model 552, the Model 551 offers the same durability and function, but in a more
compact unit. At 4 inches in length, this sight takes up less valuable rail space, leaving more room for a rear iron sight
or NV mount.
· N Battery
·
65 MOA circle with 1 MOA aiming dot reticle pattern
· Compatible
with Gen I-IV Night Vision Systems (tandem operation)
·
Includes rugged aluminum hood assembly and knobbed tool-less
mounting bolt
· Interfaces to standard 1" Weaver dovetail / Picatinny rail
Operation
· Optics: Transmission
holography - 100% parallax free
·
Magnification: 1x
·
Eye Relief: Unlimited
·
Length/Width/Height: 4"x1.8"x2.25" (102x49x60 mm)
· Weight: 8.8 oz (250 grams)
· Temperature: -20 to 140 F
·
Waterproof: Submersible to 33 ft depth
· Sealing: Fogproof internal
optics
· Color/Finish: Non reflective black with hard coat finish
·
Adjustment (per click): 0.5 MOA (1/2" at 100 yds)
· Adjustment Range: +/- 40
MOA travel
· Mount: Picatinny (MIL-STD-1913) rail
·
Return to Zero: Repeatable to 2 MOA after re-mounting
Heads-Up-Display
Window
· Optical Surfaces: Anti-glare coating
·
Window Dimensions: 1.20" x 0.85" (30 x 23mm)
· Front Window Material: 1/8"
solid glass
· Rear Window Material: Shatter resistant laminate (3/16" thick)
· Field of View (100 yds):
30 yds (28m) at a 4" eye relief
·
Standard Reticle: 65MOA circle with quadrant ticks with 1 MOA aiming dot
Electrical
·
Brightness Adjustment Range: 110,000:1 brightest to lowest
· Night Vision Brightness Range:
1000:1 with NV switch engaged
·
Power Source: 2x N type 1.5V alkaline batteries (3.0V)
· Battery Life: 200 continuous
hours at nominal setting 12
·
Brightness Settings: 30 settings with scrolling feature (10 settings for NV use)
· Auto Battery Check Indicator: Flashing reticle upon start-up
·
Auto Shut-down: At 8 hrs- programmable to 4 hrs
