The Aimpoint® CompM4 sight, with low battery compartment, belongs to the CompM4 series sights which are the finest sights Aimpoint has ever produced. Improvements include improved energy efficiency that provides up to 8 years of continuous use from a single AA battery!The sight comes complete with spacer and QRP2 mount integrated.UNIQUE FEATURES• High battery compartment• Compatible with every generation of NVD• ACET technology allows up to 80,000 hours (over 8 years) ofdaytime operation on one AA battery• Internal voltage regulator allows the CompM4 to be used withany AA size battery• 7 NVD settings and 9 daylight settings• 500,000 hours of use on NVD setting• 2 MOA dot for close combat and long distance engagement• Matches perfectly with Aimpoint® 3XMag• Unequalled light transmissionMount base is keyed into to the body of the sight to absorb recoilQRP2 mount incorporatedMount base screws directly into the sight – no separate sight ring requiredFront lens opening is threaded for addition of killFlash® antireflectivedevice• Submersible to 150 feet (45 meters)• Type classified as the U.S. Army’s new M68CCOImproved adjustment caps are easier to remove and protectedagainst impact• Can be used with a carry handle adapter for use on all M16rifles• Mechanical switch for speed and reliabilityTechnical SpecificationsOptical SpecificationsOperating principle: Reflex Collimator sight with LEDOptical magnification: 1xAiming dot size: 2 MOADot intensity: Visible against a background luminance of 0,1 to 55 000 lxOptical signature: No optical signature is visible at 10 meter distance, front side, on appropriate settings with NVD 3Dot color: Peak Wavelength: 650 ± 10 nmNVD compatible: YesOptical coating: Anti-reflex, all surfaces and multi-layer. NVD-Compatible 1, 2, 3Clear aperture: 26 mmEye relief: Unlimited Power SourceBattery type: AA size battery, (rechargeable 1.2V), alkaline/lithium 1,5V or ithium 3-3,7V (acceptable voltage 1,2-5volt)Battery life – Day time use: 80.000 h continuous (pos. 12 of 16). Responds to >500 000 hours at NVD setting (pos. 4)Power intensity: 7 NVD and 9 Daylight, of which 1 extra bright Physical SpecificationsLength sight only: 120 mm (4 3/4″)Length conf: 135 mm (5 5/16″)Width: 72 mm (2 13/16″)Height sight only: 60 mm (2 3/8″)Height conf: 72 mm (2 13/16″)Weight sight only (incl battery): 268 g (9,4 oz)Weight conf: 376 g (13,2 oz) incl. Lens Covers, Kill-Flash, Mount, and SpacerHousing material: High Strength AluminumHousing finish and color: Matte blackHousing anodized: YesMaterial mount and spacer std conf: High Strength AluminumSurface treatment: Hard anodized, matteHeight of optical axis – sight and mount: 30 mm (1 3/16″) over top surface of Picatinny/Weaver RailHeight of optical axis – sight, mount and Micro spacer: 39 mm (1 9/16″) over top surface of Picatinny/Weaver RailAdjustment: Range ±2 m at 100 meters (±2 yds at 100 yds) in windage and elevation, 1 click = 16 mm at 100 meters = 13 mm at 80 meters = 9/16″ at 80 yds Environmental SpecificationsTemperature range operation: -45°C to 71°C (-49°F to 160°F)Temperature range storage: -51°C to 71°C (-60°F to 160°F)Temperature shock: Operable after a temperature shock between -45°C and +71°C. Duration: 4h of Hot +71°C, 4h of Cold -45°C. Cycling: 3 timesHumidity: Operates despite humidity. Limits: RH: 95%, Temp: 20ºC to 50 ºC, cyclicImmersion, static: Operates after immersion until temperature is stabilized + 10°C compared to the water. Limits: Depth: 45 m (150 ft.)Shock: Operable before and after shock. Limits: X-axis: 500 g, 0.7 – 1.1 ms (3 shocks), Y-axis: 40g ±4g, 11 ±1ms (2 shocks in each direction, Z-axis: 40g ±4g, 11 ±1ms, 2 shocks in each direction. Functional during exposure (room temperature)Vibration: Operates despite vibration. Limits: Vibration, sinusoidal in a frequency range of 10-150 Hz. Frequency: 10-30 Hz, ±1.587 mm, Frequency: 30-150 Hz. 5.75 g, 1 octave/minChemical resistance: Withstands occasional contamination of: Hydraulic oil (FSD 8407, Tryckolja 021), Lubricating oil (FSD 8127, Motorolja 5W/30), Lubricating oil (FSD 8220, Smörjfett 220), Lubricating oil (Break Free), Fuels (FSD 8612, Diesel fuel oil), Solvents/cleaning (FSD)