Standardized as the weapon sight of choice by America's warrior elite, the US Special Operations Command. • Flat Black or Flat Dark Earth colors • USSOCOM standardized, Type Classified SU-231/PEQ • Dual ARMS throw levers with 7mm raised base • 66ft. submersion rating • CR123 Lithium battery • 65MOA ring/1MOA dot reticle pattern Operation • Optics: Transmission holography - 100% parallax free • Magnification: 1x • Eye Relief: Unlimited • Length/Width/Height: 4.9"x1.8"x2.8" (124x49x71 mm) • Weight: 12.3 oz (349 grams) • Temperature: -40 to 150 F • Waterproof: Submersible to 66 ft depth • Sealing: Fogproof internal optics • Color/Finish: Flat Dark Earth or Non Reflective Black with hard coat finish. • Adjustment (per click): 0.5 MOA (1/2" at 100 yds) • Adjustment Range: +/- 40 MOA travel • Mount: USSOCOM requirements dictated dual quick release throw levers designed specifically for the Picatinny (MIL-STD-1913) mounting rail. Certain commercial variants of the MIL-STD-1913 rail specification may not be compatible with the SU-231/PEQ (M553) mounting assembly. The SU-231/PEQ (M553) base consists of (2) ARMSŪ throw levers and is only adaptable to rails that properly accept the ARMSŪ design. • Return to Zero: Repeatable to 1 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: 2 x 123 lithium batteries • Battery Life: 1100 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