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1. general eotech L 3com com Visit us on iheweb www eotechinc com 28 29 OUR PRODUCT IS PROUDLY MANUFACTURED IN THE UNITED STATES OF AMERICA 30
2. 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 HWS is a state of the art optical sighting system employing holo graphic sighting technology for small to medium caliber weaponry and launching type platforms The HWS utilizes holographic optics fabrication technology that is used in the production of advanced heads up display in attack fighter aircraft for targeting gauge reading weapon system verification etc L 3 EOTech has miniaturized the sophisticated sighting heads up display system into a compact and rugged package for use on small arms and other weapon 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 HWSQ is extremely rapid reticle on target acqui sition As quickly as a target is identified the holographic reticle can be superimposed on the target The sight allows operators to maintain eye contact on the target and to place the holographic reticle onto the target without shifting focus Operators can quickly acquire the target and reticle in the same focal plane for fast and a
3. mission Alkaline batteries from different manufacturers are not all constructed the same way Tests show some brands are more susceptible to degradation by the shock of recoil We recommend the use of Energizer batteries with the HWS Lithium AA batteries offer longer life particu 10 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 3 Replacing the Batteries Remove the battery compartment by lifting up on the locking cam lever and carefully sliding the battery compartment away and up from the sight housing Figure 3 After the battery compart ment is removed slide the batteries out and replace them with a fresh set The labels on the bottom of battery compartment show the correct battery orientation Always make sure the gasket is free of dirt before the battery compartment is reinstalled or the seal may be compro mised To reinstall the battery compartment point the sight towards the ground and slide battery compartment onto base Make sure there is enough clearance between the contact and the batteries to avoid bending the contacts Hold the battery compartment down firmly against
4. of the lock only enough for the base to sit properly on the rail Turn the Knurled Weaver bolt clockwise drawing the weaver lock into the rail until resistance is felt Using a coin U S nickel or similar size is recommended rotate the bolt head an additional 1 2 turn to fully tighten This is equivalent to approximately 17 in Ib 0 2 kgm of torque 25 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 26 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 http www eotechinc com hws service and support parts and repair 27 4 0 APPENDIX B Factory Contacts Customer 2 rere ree Leto ee 888 EOTHOLO 734 741 8868 x2176 Link to website to submit RA Request http www EOTech inc com raform php Technical Sales Service A 888 EOTHOLO Shipping Address L 3 EOTech Inc 1201 E Ellsworth Rd Ann Arbor MI 48108 USA
5. the base and close the locking cam Before you push down on cam lever make sure the battery compartment sits all the way down and is parallel to the base Verify correct battery installation immediately by turning on the sight and checking if the holographic reticle appears If the bat teries are left in the sight backwards they will be drained of their power 11 REMOVE AND REPLACE BATTERIES Figure 3 Proper Battery Installation 12 ON 8 hr Auto Shut NV Mode NV Mode Toggle ON 4 hr Auto Shut Off Decrease Brightness ONIS he Auto Shut OR Increase Brightness 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 The sight will automatically perform a battery check every time it is turned on The reticle will blink when the batteries have between 20 percent or less useful life left 13 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 sw
6. vision intensifier tubes Operators can see the holographic reticle image with helmet mounted or weapon mounted night vision devices The HWS is a passive system and emits no signature from frontal or from a peripheral aspect While in the NV mode the sight is undetect 3 able by opposing force night vision equipment HWS can be positioned behind night vision systems without any bloom on the target area The primary use of the HWSQ is for the MAAT 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 The sight provides a 1X no magnification sight pic ture and is not designed as a long range sight system however it can be used as effectively as iron sights on targets to 300 meters The advantage of the HWS is that it provides the operator superior shooting perfor mance rapid reticle on target acquisition full field of view and accurate shot place ment The HWS be naturally employed by all levels of users from novice to the most highly trained operator 1 3 552 Equipment Description Operation Optics Transmission holography Magnification 1x Eye Relief Unlimited Length Width Height 5 4 x2 x2 25 137 x 50 8 x 57mm Weight 10 9 oz 3100 Water Resistant Submersible to 33 ft 10m Sealing Fog resistant internal optics Co
7. OPERATOR S MANUAL FOR 552 HWS HOLOGRAPHIC WEAPON SIGHT See inside cover for distribution statement NSN 1240 01 492 5264 for model 552 EOTech Technical Manual ver E MAY 2015 An L 3 Company 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 L 36 EOTech Service Dept Attn TM Request 1201 E Ellsworth Rd Ann Arbor MI 48108 734 741 8868 x2176 general eotech L 3com com This commodity is controlled under the Export Administration Regulations EAR ECCN 0A987 and may not be exported to a Foreign Person either U S or abroad without a license or exception from the U S Department of Commerce 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 HWS is a Class II laser product The Class II 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 lla laser product The illuminating beam can become accessible to the eye if the ho
8. attery 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 Clean the con tacts Corrective Action 7 Turn in the sight for unit level maintenance Failure The reticle is fuzzy has a halo effect has more than one reticle 20 The reticle is naturally pixilated and the outer circle will appear to be made up of many small dots The center circle will still be distinguishable as one dot Corrective Action 1 Lower the brightness level of the reticle This fault is generally caused by the reticle brightness being too high The reticle is not designed to be so bright as to block the target Corrective Action 2 is projected onto your target plane You must focus 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 If you wear bi
9. c reticle pattern embedded in the display window and forms a virtual image of a reticle pattern The shooter looks through the display window and sees a bright red image of a reticle pattern projected onto the target plane No light is projected onto the target plane The HWS has no magnification 2 1 1 Hood 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 L 3 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 The reticle brightness will not fade gradually as the battery runs down but rather shut down abruptly The first indication of the battery draining is the reticle blinking when the unit is turned on see Electronic Features 2 1 4 Another indication of a low battery is the reticle pattern blinking off and on during recoil With high recoil guns this can occur before the battery check indicates low battery condition f the reticle pattern blinks off and on during recoil or turns off suddenly replace the battery Please read and follow the battery replacement and battery check proce dures described in this Manual It is always good practice to replace the battery with a fresh one before a
10. ccurate shot placement The HWSQ appears to project the holographic image of a reticle on the target plane The sight can be used as a bright open reticle image or a fine dot which is limited only by the acuity of the shooter s eye The heads up display window allows an undistorted and unrestricted view of the target The 552 is offered with one of the following 2 reticle options see fig 1 e 0 68 minute ring with vertical and horizontal stadia and a 1 MOA aiming dot e XR308 Ballistic reticle pattern for a 308 cal using 150gr M59 FMJ at roughly 2 800 fps using a 24 8 barrel Fig 1 552 reticle options HWS offers extremely fast target acquisition in Close Quarter Battle 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 HWS employs a true heads up display HUD window that eliminates blind spots and constricted or tunnel vision associated with scope sights Controls are inset into the HWS housing with no protruding knobs battery compartments or rings obscuring the target Utilizing natural binocular vision is an advantage of this sighting system as well as additional threat identification through increased operator situational awareness and peripheral vision The 552 can operate in tandem with Generation 111 night
11. djustment LEFT To move the point of impact RIGHT turn the windage adjustment RIGHT The HWS elevation and windage adjustments are factory collimated with the bore of the rifle parallel to the mounting rail The sight should be close to mechanical zero when mounted on a properly installed rail Do not turn the adjustments before mounting the sight on the firearm Be sure to check that the mount and sight are securely mounted after initial firing CAUTION When encountering an increase in resistance in adjustments the end of the adjustment range has been reached DO NOT turn the adjustments any farther serious damage may occur to the sight 17 2 2 Preventive Maintenance Checks 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 If there is any exposed internal content of the battery it could potentially effect the operation of the sight OPERATOR CLEANING INSTRUCTIONS 1 The optical system and the window are coated with anti reflection material When cleaning the glass surfaces first blow away any dirt and dust Fingerprints and lubricants can be wiped off with
12. eassembled 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 The compart ment is easily and quickly removed for the replacement of batteries Universal Mount Integrated base to mount to either a 1 25 4mm Weaver or MIL STD 1913 rail Windage Adjustment Adjusts the point of aim approx 1 2 MOA per click in a leftward and rightward direction when zeroing Elevation Adjustment Adjusts the point of aim approx 2 MOA per click in an upward and downward direction when zeroing On Off NV Mode and Brightness Switches Raised button control interface allows the operator to perform and adjust user settings for appropriate and preferred conditions see page 13 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 2xAA alkaline battery Knurled Weaver bolt 7 64 allen key Quick Reference Card Product Registration Warranty Card 2 1 Description of Components Controls and Indicators The HWS uses a laser to illuminate a holographi
13. es for rips tears dents or cuts in the housing If there is any exposed internal content of the battery it could affect the operation of the sight The 552 HWS units are designed to mount directly to either a 1 25 4mm weaver or MIL STD 1913 rail specification This page was intentionally left blank 1 0 2 0 INTRODUC TION psp 1 11 General Intormmaton 1 1 2 Attributes aria dane suene 2 1 3 Equipment Description een tete nn ente e xen 5 1 4 Location and Description of Major Components 7 OPERATING INSTRUCTION 9 2 1 Description of Components Controls and Indicators 9 211 ee DEEN 10 2 1 2 Batteries used etii deer RI ERR AR EY ERRORES 10 2 9 Replacing Batteries ettet rete bein 11 2 1 4 13 2 1 5 Night Vision Mode eee iioii 15 2 1 6 Windage and Elevation Adjustments 16 2 2 Preventive Maintenance Checks and Services PMCS 18 2 3 Troubleshooting cnr 19 2 4 Unit Level Maintenance and 23 2 5 Installation of Eoumpment 25 20 Zeroing lee 26 3 0 4 0 APPENDIX A COMPONENTS OF END 3 4 Replacement Items APPENDIX B FACTORY CONTACTS
14. focals or have astigmatism you may see a distorted reticle Corrective Action 4 Check with others who have used the sight and compare what you see to ensure it is not your focal acuity prior to turning the sight in for repair Corrective Action 5 Turn the sight in for unit level maintenance Failure The reticle is flashing flashing on and off unit turns off during recoil Corrective Action 1 This is the low battery indicator Replace the batteries Corrective Action 2 If the batteries are low a high recoil weapon platform can cause the reticle to flash on and off even before the low battery indicator takes effect Replace the batteries 21 Failure 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 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 Corrective Action 2 Check with others who have used the sight and compare what you see to ensure it is not your focal acuity prior to turning the sight in for repair Corrective Action 3 Turn in for unit level maintenance Failure am missing a bolt have broken a bolt have broken a latch 22 Correcti
15. ght s you will return Include reference to the RA and a signature line for L 3 EOTech s Service Department to sign indicating the receipt of materials The signed copy will be mailed faxed or emailed back to you upon receipt of the sight s for the purposes of accountability 5 If the manufacturing date located on the bottom of the sight is more than Five years old a fee will be assessed for repair to include the cost of both parts and labor A purchase order will be required to process the repair Please contact L 3 EOTech for an estimate Please send the unit postage prepaid to address listed in Appendix B Please include your name address telephone number and a written description of the problem you are encounter ing and also include the RA Whenever possible ship the sight in its original box 24 2 5 Installation of Equipment MOUNTING The HWS is equipped with mounting hardware to attach to a 1 25 4mm Weaver or MIL STD 1913 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 maxi mum 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 Turn the Knurled Weaver bolt counterclockwise to back the bolt out of the weaver lock Do not back the bolt all of the way out
16. ight Vision Modes To toggle between NORMAL and NIGHT VISION MODES press the NV button When switch ing between modes the sight will remember the last brightness setting NOTE When used with a Night Vision device always check to make sure the sight is not turned on before pressing the NV button to turn on the sight in the Night Vision mode Otherwise it will toggle to the Normal mode and saturates the image intensifier 15 2 1 6 Windage and Elevation Adjustments knob knob Fig 5 Adjustments 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 16 adjustment Both of these adjustment mechanisms are grooved with a slotted screw head require the use of a screwdriver coin or spent brass to turn The elevation and windage adjust ments 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 inch 6 35mm at 50 yards 45 7m or inch 12 7mm at 100 yards 91m when zeroing Also one full rotation of either knob will change the point of aim approximately 10 MOA 5 inches 127mm at 50 yards 45 7m or 10 inches 254mm at 100 yards 91m when zeroing To move the point of impact UP turn the elevation a
17. itches 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 bright ness to their preference 4 Auto Shutdown The HWS has an auto shutdown feature If the sight is turned on by pressing the UP button it will automatically shut itself OFF 8 hours after the last pushbutton control is used The sight will automatically shut OFF after 4 hours if it is turned on by pressing the DOWN button 14 2 1 55 Night Vision Mode Auto Shutdown The 552 HWS is compatible with Generation 111 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 There are ten 10 NV brightness settings provided to allow the user to adjust the reticle bright ness to their preference 2 OFFI Turning Sight OFF To turn the sight off press both the UP and DOWN arrows simultaneously Verify that the sight shuts off by looking though the heads up window with the night vision device 3 TOGGLE Between Normal and N
18. lens tissue or a soft cotton cloth moistened with lens cleaning fluid or glass cleaner sold in any camera store Never clean the glass surface with a dry cloth or paper towel always dampen the glass surfaces prior to cleaning 18 2 No maintenance is needed 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 moving parts of the sight are permanently lubricated Do not try to lubricate them 4 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 damage the sight 2 3 Troubleshooting The following section outlines measures the operator can take in the event of the named failure Failure The sight will not power up Corrective Action 1 Ensure that the sight is off and not ON at a very low brightness setting or in NV mode by pressing both the UP and Down buttons simultanously Corrective Action 2 Ensure the batteries are inserted properly according to the dia gram on the bottom of the battery cap 19 Corrective Action 3 Replace the batteries with new unused batteries that contain a full charge Corrective Action 4 Inspect the battery contact points in both the b
19. lor 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 Mount 1 25 4mm Weaver or MIL STD 1913 rail Display Window Optical Surfaces Anti Reflection coating on external surfaces Window Dimensions 1 20 x 0 85 30 x 28mm Front Window Material Glass 1 8 3 17mm thick Rear Window Material Laminate 3 16 4 76mm thick Field of View 100 yds 91m 30 yds 28m at a 4 eye relief Reticle Options 0 68MOA circle with quadrant ticks with 1 MOA aiming dot XR308 4 ballistic aiming dots designed around 308 caliber round Electrical Power Source 2 x AA batteries supports lithium alkaline or rechargeable Battery Life Approximately 1 000 continuous hours lithium at nominal setting 12 600 con tinuous with AA alkaline at room temp 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 NSN 1240 01 492 5264 for model 552 1 4 Location and Description of Major Components Protective Hood Battery Cap Latch Removable Battery Cap Elevation Adjustment Windage Adjustment Fig 2 552 components Holographic Window Contains the embedded holographic reticle pattern that forms a virtual image of the reticle when illuminated by laser light Protective Hood Pr
20. using is broken Turn the sight off immediately and return the broken unit to the factory for repair FCC COMPLIANCE The HWS complies with Part 15 of the FCC Rules Operation is subject to the following conditions 1 this device may not cause harmful interfer ence and 2 this device must accept any interference received including interference that may cause undesired operation Complies with 21 CFR Chapter 1 Subchapter J This page was intentionally left blank CAUTION Never disassemble the sight s optical assembly The optical cavity is purged nitro gen 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 When a sudden increase in resistance is felt in the elevation or windage adjustment shafts the end of the adjustment range has been reached DO NOT TURN THE ADJUSTMENTS ANY FARTHER OR SERIOUS DAMAGE MAY OCCUR TO THE SIGHT Never clean the glass surface with a dry cloth or paper towel always dampen the glass surfaces prior to cleaning All moving parts of the sight are permanently lubricated Do not try to lubricate them Do not use deteriorated or corroded batteries Inspect batteri
21. ve Action 1 Turn the sight in for unit level maintenance 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 If the sight has been turned in for unit level maintenance that requires action in addition to the above mentioned authorized repair or replacement items the sight will need to be returned to the manufacturer for the repair Contacting the manufacturer for repair 1 Visit the manufacturer s website at http Awww eotechinc com Click on the Service and Support Tab in the menu bar and follow the instructions 23 2 or email L 3 EOTech s Customer Service Department at the following 734 741 8868 x2176 general eotech L 3com com 3 Be 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 If you require fill out a DD Form 1149 to include with the si

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