OPERATOR’S MANUAL FOR 552™ HWS® (HOLOGRAPHIC WEAPON SIGHT) See inside cover for distribution statement. NSN: 1240-01-492-5264 (for model 552) N1979 EOTECH Technical Manual ver.
DISTRIBUTION STATEMENT: Distribution is authorized to U.S. Government agencies and their contractors. This publication is required for administration and operational purposes. Additional copies of this document can be found on the manufacturer’s website. Written requests must be referred to: L3 EOTECH® Service Dept. Attn: TM Request 1201 E. Ellsworth Rd. Ann Arbor, MI 48108 (734)741-8868 x2176 support.eotech@L3T.
WARNING WEAPON SAFETY: Prior to mounting the HWS on your weapon, be sure the weapon is cleared. If you are not sure how to clear your weapon, please see the accompanying operator’s manual for the weapon platform you are mounting the sight on. LASER SAFETY: The HWS is a Class I laser product. The Class I level illuminating beam, however, is completely blocked by the housing. The only laser light accessible to the eye is the image beam and is at a power level within the limit of a Class I laser product.
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CAUTION • Never disassemble the sight’s optical assembly. The optical cavity is purged, nitrogen filled, and sealed to achieve fog resistant performance. Disassembly will void the warranty and render the sight inoperable. • When using a Night Vision compatible HWS in tandem with an NV device, always check to make sure the sight is off before pressing the NV button to turn on the sight in the Night Vision mode. Otherwise, it will toggle to the Normal mode and saturate the image intensifier.
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1.0 INTRODUCTION............................................................................................. 1 1.1 1.2 1.3 1.4 2.0 General Information............................................................................... 1 Key Attributes........................................................................................ 2 Equipment Description.......................................................................... 5 Location and Description of Major Components.............................
3.0 APPENDIX A, COMPONENTS OF END ITEM.............................................. 27 3.1 Replacement Items.............................................................................. 27 4.0 APPENDIX B, FACTORY CONTACTS..........................................................
1.0 INTRODUCTION 1.1 General Information This manual is an overview of the 552 HWS (Holographic Weapon Sight), and will define the basic operation, features/benefits, and options of this proprietary optical system. The HWS is a state of-the-art optical sighting system, employing holographic sighting technology for small to medium caliber weaponry and launching type platforms.
1.2 Key Attributes The 552 HWS is a lightweight, non-magnifying, optical sight designed for close to midrange engagements. It allows very fast target acquisition and engagement at short ranges while providing aiming capability out to 300 meters equal to or better than iron sights. The major combat advantage of the HWS is extremely rapid reticle-on-target acquisition. As quickly as a target is identified, the holographic reticle can be superimposed on the target.
Fig. 1 552 reticle options The HWS offers extremely fast target acquisition in Close Quarter Battle (CQB) using the large ring, and aiming precision in longer range engagements (using the MOA Dot) without obscuring the target. Another advantage of the HWS is the full field of view which allows the operator better situational awareness. The HWS employs a true heads up display (HUD) window that eliminates blind spots and constricted or tunnel vision associated with scope sights.
able by opposing force night vision equipment. The HWS can be positioned behind night vision systems without any “bloom” on the target area. The primary use of the HWS is for the M4A1 carbine and CQBR in Close Quarters Battle. The HWS is not however, limited to carbines. The HWS can also be used on medium caliber machine guns, grenade launchers, bolt guns, crossbows, and less than lethal projectile launchers.
1.3 552 Equipment Description Operation • O ptics: Transmission holography • M agnification: 1x • E ye Relief: Unlimited • L ength/Width/Height: 5.6”x2”x2.5” (143 x 51 x 64mm) • W eight: 11.5 oz (325g) • W ater Resistant: Submersible to 33 ft (10m) • S ealing: Fog resistant internal optics • C olor/Finish: Non-reflective black • Adjustment (per click): Approx. 0.5 MOA (1/2” (12.7mm) at 100 yds (91m)) when zeroing • Adjustment Range: +/- 40 MOA travel • M ount: 1” (25.
Display Window • O ptical Surfaces: Anti-Reflection coating on external surfaces • W indow Dimensions: 1.20” x 0.85” (30 x 23mm) • Front Window Material: Glass 1/8" (3.17mm) thick • R ear Window Material: Laminate 3/16” (4.76mm) thick • F ield of View 100 yds (91m): 30 yds (28m) at a 3” eye relief • R eticle Options: 068MOA circle with quadrant ticks with 1 MOA aiming dot XR308 - (4) ballistic aiming dots designed around .308 caliber round.
1.
Holographic Window - Contains the embedded holographic reticle pattern that forms a virtual image of the reticle when illuminated by laser light. Protective Hood - Preassembled, protective hood increases durability of sight housing and protects the sight from impact damage. Battery Latch - A cam lever that secures the removable battery compartment to the sight and prevents water, dirt, or grime from entering the battery housing. Battery Cap- Protective housing that contains the power source for the HWS.
2.0 OPERATING INSTRUCTIONS This section describes the features and operating instructions of the 552. Please read the instructions carefully before mounting and using the sight, and always practice proper firearm safety. The HWS will include: • • • • • • Sight assembly 2 x AA alkaline battery Knurled Weaver bolt 7/64 allen key Quick Reference Card Product Registration/Warranty Card 2.
2.1.1 Hood The HWS is equipped with a protective hood. This hood is pre-assembled at the factory. Should your hood require repair or replacement, please contact your unit armorer for repair, replacement, or contact the manufacturer (L3 EOTECH) for repair or replacement. 2.1.2 Battery Two initially supplied (2) AA alkaline batteries power the 552 HWS. The HWS is designed to maintain constant brightness at a particular setting as the battery drains down.
larly at temperatures below freezing. For this reason Lithium AA batteries are recommended for cold weather operations. However, it should be noted that the battery checking function, which is based on the characteristics of alkaline batteries, does not operate properly when Lithium AA batteries are used in the model 552 and may not indicate a low battery condition until very little battery life is left. 2.1.
Figure 3: Proper Battery Installation 12
Fig 4: Pushbutton interface 2.1.4 Electronic Features All electronic controls are via pushbutton switches located at the rear of the unit housing as shown in Fig. 4. To ensure proper operation of the pushbutton switches, press firmly on the center of the switch. 1. ON/ Auto Battery Check Pressing the Up or Down Arrow pushbutton switches will turn the sight ON at Level 12. See item 4 under this section for a description of Auto shutdown.
2. OFF To turn the sight off, simultaneously press both the UP and DOWN arrows. Verify that the sight is on/off by looking through the heads-up display window for the reticle. 3. Brightness Adjustment Pushbutton switches vary the brightness intensity of the holographic reticle pattern. Pressing the UP arrow or DOWN arrow switch will change the brightness level up or down. There are twenty (20) daytime brightness settings provided to allow the user to adjust the reticle brightness to their preference. 4.
2.1.5 Night Vision Mode On/Off Auto Shutdown The 552 HWS is compatible with Generation I - III+ Night Vision Devices. At the night vision settings, the reticle brightness is low enough that when viewed with a night vision device, the reticle image does not bloom. 1. ON/ Night Vision Mode and 8 Hour Auto Shut Down Pressing the NV Button (see Fig. 4) will turn the sight ON in Night Vision Mode. The sight will turn on at Level 4 and automatically shut off 8 hours after the last pushbutton control is used.
2.1.6 Windage and Elevation Adjustments Fig 5: Adjustments The HWS features click mechanisms for elevation and windage adjustments. The elevation and windage adjustment are located on the right-hand side of the sight (Figure 5). The knob towards the front is the windage adjustment and the knob towards the rear is the elevation adjustment.
Both of these adjustment mechanisms are grooved with a slotted screw head and require the use of a screwdriver, coin, or spent brass to turn. The elevation and windage adjustments are shown in Fig. 5. For both elevation and windage, each click will change the sights point of aim approximately 1/2 Minute of Angle (MOA), ¼ inch (6.35mm) at 50 yards (45.7m), or ½ inch (12.7mm) at 100 yards (91m) when zeroing.
2.2 Preventive Maintenance Checks and Services (PMCS) OPERATOR LEVEL MAINTENANCE The operator is limited to replacing batteries and cleaning the battery compartment and outer housing surfaces of the sight. REPLACING BATTERY See the heading ‘Replacing Batteries’ (2.1.3) under section Description of Components, Controls, and Indicators. Do not use deteriorated or corroded batteries. Inspect batteries for rips, tears, or cuts in the housing.
2. No maintenance is needed on the sight’s surface, except to occasionally wipe off with a soft cloth. Use only a water-based cleaner such as glass cleaner, ammonia, or soap and water. Never use any solvent-type cleaner such as alcohol or acetone. Do not use gun cleaner to clean or lubricate the HWS. 3. All moving parts of the sight are permanently lubricated. Do not try to lubricate them. 4.
full charge. Corrective Action 4: Inspect the battery contact points in both the battery cap and in the sight itself. Ensure that they are free of debris or corrosion. Corrective Action 5: Reset the electronics by removing any source of power for approximately two minutes. This will allow a capacitor in the electronics housing to drain of power, resetting the electronics. Reinstall the battery and operate the sight as normal. Corrective Action 6: Check the battery contacts for corrosion or wear.
Corrective Action 2: The reticle is projected onto your target plane. You must focus on it like you would any other object at that distance. Do NOT focus on the sight housing, rather, focus on your target. The outer ring is designed to be a reference to center, similar to a ghost ring. Corrective Action 3: If you wear corrective lenses for nearsightedness, you will require them, not reading glasses, to see the reticle in focus, as it is projected onto the target plane.
Corrective Action 3: Replace the batteries with an Energizer brand battery. These have proven to be the most effective to withstanding a consistent amount of recoil. Many brands of batteries deteriorate faster than others and can result in these failures. Corrective Action 4: Turn the sight in for unit level maintenance. Failure: There is a streak in the reticle/ the reticle is dim/ the reticle fades in parts of the win dow: Corrective Action 1: Replace the batteries.
2.4 Unit Level Maintenance and Repair The Unit Armorer or individual responsible for unit level maintenance is only authorized to replace or repair the following items: – – – – – Batteries Battery Cap Protective Hood and Hood Screws Quick Reference Card Knurled weaver bolt Please see Additional Authorized Items in Appendix A for the corresponding NSN numbers for the above listed components.
2. Call or email L3 EOTECH’s Customer Service Department at the following: (734) 741-8868 support.eotech@L3T.com 3. B e sure to leave a name, contact number, return shipping address, and failure description in the email or on a voice mail. This will allow the manufacturer to generate a Return Authorization Number (RA#) to include with the sight(s). DO NOT SHIP THE SIGHTS WITHOUT A RETURN AUTHORIZATION NUMBER (this will severely delay the turn around time on repair or replacement). 4.
2.5 Installation of Equipment MOUNTING The HWS is equipped with mounting hardware to attach to a 1” (25.4mm) Weaver or MILSTD-1913 Picatinny style rail. To achieve the best results and accuracy, the HWS must be mounted properly. The rail needs to be as parallel as possible to the bore to permit the maximum elevation and windage adjustments. If it is required, it is strongly recommend that the rail be installed by a qualified gunsmith. To mount the sight, please follow these steps.
2.6 Zeroing Procedures Once the weapon’s iron sights have been zeroed, please refer to the section on Windage and Elevation Adjustments (Section 2.1.6) to zero the HWS. The following are some additional reference aids that can be used during the zeroing process. BORE SIGHTING Bore sighting is a good preliminary procedure in achieving proper alignment of your sight to the firearm. A chamber laser/ bore sighter is an aid in achieving collomation.
3.0 APPENDIX A: Components of End Item 3.1 REPLACEMENT ITEMS To obtain replacement parts that are able to be field installed for your HWS or Magnifier Please visit our Web page support link at: https://www.eotechgear.
4.0 APPENDIX B: Factory Contacts Customer Service/Repair..................................................................... 888-EOTHOLO (734) 741-8868 Technical Sales/Service....................................................................... 888-EOTHOLO Shipping Address: L3 EOTECH 1201 E. Ellsworth Rd. Ann Arbor, MI 48108 USA Email ................................................................................... support.eotech@L3T.com Web............................................
OUR PRODUCT IS PROUDLY MANUFACTURED IN THE UNITED STATES OF AMERICA 29 29
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