L3 communications EOTech OPERATOR’S MANUAL FOR SU-231/PEQ (HWS M553) (1240-01-533-0941), REFLEX SIGHT, HOLOGRAPHIC, NV COMPATIBLE, 123 LITHIUM VERSION BATTERY, EOTECH ORDER CODE: 553.A65 HWS M552 (1240-01-492-5264), REFLEX SIGHT, HOLOGRAPHIC, NV COMPATIBLE, AA VERSION BATTERY, EOTECH ORDER CODE: 552.A65 HWS M551 (1240-01-485-0441), REFLEX SIGHT, HOLOGRAPHIC, NV COMPATIBLE, N CELL VERSION BATTERY, EOTECH ORDER CODE: 551.A65 See inside cover for distribution statement. L-3 Eotech Inc. 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 manufactuerʼs website. Written requests must be referred to: L-3 EOTech Service Dept. Attn: TM Request 1201 E. Ellsworth Road Ann Arbor, MI 48108 (734)741-8868 Option #8 general@L-3com.
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 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 IIa laser product.
CAUTION • Never disassemble the sight’s optical assembly. The optical cavity is purged, nitrogen filled, and sealed to achieve fog proof performance. Disassembly will void the warranty and render the sight inoperable. • There is a 12 volt battery that is approximately the same size as the Type N 1.5 volt alkaline battery used in the M551. DO NOT USE the 12 volt batteries. They will severely damage the sight.
• All moving parts of the sight are permanently lubricated. Do not try to lubricate them. • Do not use deteriorated or corroded batteries. Inspect batteries for rips, tears, dents, or cuts in the housing. If there is any exposed, internal content of the battery, it could effect the operation of the sight. • The SU-231/PEQ (HWS M553) is designed to mount only to rail systems that are made to the dimensions of the current MIL-STD-1913 rail specification.
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TABLE OF CONTENTS 1.0 Page INTRODUCTION ............................................................................................ 1 1.1 1.2 1.3 1.4 2.0 General Information...............................................................................1 Key Attributes ...................................................................................... 2 Equipment Description ........................................................................ 4 Location and Description of Major Components ........
3.0 MOUNTING SOLUTIONS ..............................................................................33 3.1 3.2 3.3 3.4 3.5 3.6 3.7 3.8 3.9 3.01 3.02 4.0 M4/M16 Flat Top Co-witness .....................................................................34 M4/M16 Adjustable Cantilever Mount ........................................................34 M4/M16 Fixed Cantilever Mount ................................................................35 M4/M16 Carry Handle Mount........................................
1.0 INTRODUCTION 1.1 General Information This manual is an overview of the SU-231/PEQ (M553), M552, and the M551 Holographic Weapon Sights (HWS) or Reflex Sight, and will define the basic operation, features/benefits, and options of this proprietary optical system. The Reflex Sight 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 SU-231/PEQ (M553), M552, and the M551 reflex sights are lightweight, nonmagnifying, optical sights designed for Close Quarter Battle. They allow 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 reflex sight is extremely rapid reticle-on-target acquisition. As quickly as a target is identified, the holographic reticle can be superimposed on the target.
The reflex sight 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 Reflex Sight is the full field of view which allows the operator better situational awareness. The Reflex Sight employs a true heads up display (HUD) window that eliminates blind spots and constricted or tunnel vision associated with scope sights.
The advantage of the reflex sight is that it provides the operator superior shooting performance, rapid reticle-on-target acquisition, full field of view and accurate shot placement. The reflex sight can be naturally employed by all levels of users, from novice to the most highly trained operator. 1.3 Equipment Description SU-231/PEQ (M553) Operation Optics: Transmission holography – 100% parallax free Magnification: 1x Eye Relief: Unlimited Length/Width/Height: 4.9”x1.8”x2.8” Weight: 12.
• The SU-231/PEQ (M553) base consists of (2) ARMS® throw levers and is only adaptable to rails that properly accept the ARMS® 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.
M552 Operation Optics: Transmission holography – 100% parallax free Magnification: 1x Eye Relief: Unlimited Length/Width/Height: 5”x1.8”x2.25” (131x49x60 mm) Weight: 11.5 oz (326 grams) Temperature: -40 to 150 F (using AA lithiums); -20 to 140 F (all other battery choices) Waterproof: Submersible to 33 ft depth Sealing: Fogproof internal optics Color/Finish: Non reflective black with hard coat finish Adjustment (per click): 0.
Electrical Brightness Adjustment Range: 110,000: 1 brightest to lowest Night Vision Brightness Range: 1000: 1 with NV switch engaged Power Source: 2x 1.
Heads-Up-Display Window Optical Surfaces: Anti-glare coating Window Dimensions: 1.20” x 0.85” (30 x 23mm) 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.
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.
2.0 OPERATING INSTRUCTIONS This section describes the features and operating instructions of the M551, M552, and SU-231/PEQ (M553). Please read the instructions carefully before mounting and using the sight, and always practice proper firearm safety. The Reflex Sight will include: • Sight assembly • 2 x Type N alkaline (M551), AA alkaline batteries (M552), or 123 Lithium batteries (M553) • 7/64” Hex wrench (M551 and M552 only) • Knurled Picatinny Bolt (M551 and M552 only) • Technical Manual 2.
2.1.1 Hood The Reflex Sight 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 turn in to the manufacturer (L-3 EOTech) for repair or replacement. 2.1.2 Batteries Two (2) commonly available Type N 1.5 volt alkaline, AA 1.5 volt alkaline or 123 Lithium batteries power your Reflex Sight depending on the model. A set of batteries comes with your sight.
CAUTION - There is a 12 volt battery that is approximately the same size as the Type N 1.5 volt alkaline battery used in the M551. DO NOT USE 12 V batteries in the M551. They will severely damage the sight. Two AA size batteries power the M552. Two 123 size Lithium batteries power the SU-231/PEQ (M553). A set of batteries comes with the sight. Lithium AA batteries offer longer life, particularly at temperatures below freezing. For this reason Lithium AA batteries are recommended for cold weather operations.
2.1.3 Replacing 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 compartment 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 water-proofing may be compromised.
2.1.4 Electronic Features All electronic controls are via pushbutton switches located at the rear of the unit housing as shown in Figure 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.
change the brightness level up or down continuously in steps. Twenty (20) brightness settings provide a dynamic range of 110,000:1 from the lowest setting to the highest setting. 4. Auto Shutdown The Reflex Sight 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. 2.1.
3. TOGGLE/ Between Normal and Night Vision Modes To toggle between NORMAL and NIGHT VISION MODES, press the NV button. When switching between modes, the sight will remember the last brightness setting. NOTE 3: 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. 2.1.
Your Reflex Sight features click mechanisms for elevation and windage adjustments. The elevation and windage adjustment are located on the right-hand side of the sight (Figure 2). 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 Figure 5.
CAUTION – There are 80 minutes of total windage and elevation (40 minutes in each direction) in the Reflex Sight. There are 80 1/2 min. clicks of adjustment from optical center to the limits of windage and elevation adjustment. To establish optical/mechanical zero, adjust turrets to limit, then return 80 clicks (do this for both the elevation and the windage). When encountering an increase in resistance in adjustments, the end of the adjustment range has been reached.
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 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. 2.
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 the batteries are inserted properly according to the diagram on the bottom of the battery cap. Corrective Action 2: Replace the batteries with new, unused batteries that contain a full charge. Corrective Action 3: Inspect the battery contact points in both the battery cap and on the sight itself.
Failure: The reticle is fuzzy/ has a ‘halo’ effect/ has more than one reticle: 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.
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. Corrective Action 3: Replace the battery with Energizer brand batteries.
Failure: I am missing a bolt/ have broken a bolt/ have broken a latch: Corrective Action 1: Turn the sight in for unit level maintenance. 2.
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 https://www.L-3com.com/eotech. Click on the Customer Service Tab in the menu bar and follow the instructions. 2.
5. If the manufacturing date located on the bottom of the sight is more than two 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 encountering, and also include the RA #.
Models M551 and M552: 1. Locate the post and Picatinny clamp on the underside of the sight. Loosen the hex bolt and the Picatinny locking bar with the hex wrench (7/64”). If using the Knurled Picatinny Bolt, first remove the hex bolt by completely unscrewing it from the locking bar and replacing it with the Knurled Picatinny Bolt. 2. Place the bolt within a groove on the top of the Picatinny rail.
Model SU-231/PEQ (M553): 1. Pull and turn the two throw-levers so they are away from their closed and nested position in the base of the sight. This will turn the securing lip of each throw lever outward and allow the sight to mount onto the rail. 2. The sight contains a small post that rests in the groove of the Picatinny rail. Move the sight to the position desired on the rail and allow the post to rest fully in the closest groove. 3.
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. LIVE FIRE SIGHTING FOR AN M-4 OR M-16 To employ the aiming dot of the Reflex Sight reticle from 10 to 300 meters, the sight can be zeroed at 25 meters using a standard M4/M16 military zeroing target.
Additionally there are custom targets for 25m zeroing used with the M-4 and M16 (see Figure 6), and for Laser Bore Sighting (see Figure 7). Please visit the manufacturer’s website at www.L-3com.
Figure 7: Laser Bore Sight for M4/M16 31
RANGE ESTIMATION WITH UNMAGNIFIED HOLOGRAPHIC WEAPON SIGHT Range estimation can be done with different portions of the projected reticle, such as the center dot or the ordinal points. Illustration (Figure 9) of range estimation with the DOT reticle. The aiming dot will displace a one inch area on the target at 100 yards, two inches at 200 yards, three inches at 300 etc. At 400 yards, an automatic ballistic compensation is accomplished simply by placing the aiming dot at the top target’s head.
3.0 MOUNTING SOLUTIONS There are numerous configurations with which to employ the Reflex Sight. The M552 and M551 Reflex Sight come with an integrated Picatinny MIL-STD-1913 mounting rail adapter that will mount to any Picatinny style or 1” dovetail type rail (please see section 2.5 Installation of Equipment).The SU-231/PEQ (M553) mount is specifically designed for the Picatinny (MIL-STD-1913) mounting rail.
3.1 M4/M16 Flat Top Co-witness: This configuration positions the sight in front of a flip-up rear iron sight. Allows for co-witnessing and also allows the shooter to maintain cheek-weld (Figure 10). Figure 10 3.2 M4/M16 Adjustable Cantilever Mount: Co-witnesses with iron sights and maintains cheek-weld. The mount has an adjustable height at the drop or ‘gooseneck’, forward of the carry handle. The mount attaches with a nut to carry handle. Works with fixed-carry handles (Figure 11).
3.3 M4/M16 Fixed Cantilever Mount: Co-witnesses with iron sights and maintains cheek-weld. The cantilever mount attaches with a finger operated nut to the carry handle. Works with removable carry handles and fixed (Figure 12).
3.4 M4/M16 Carry Handle Mount: This mount positions the Picatinny rail on top of the carry handle. Maintains access to iron sights and has extended rail for night vision systems. Works well with gas masks or peripherals (Figure 13).
3.5 HK Low Profile: Low profile positioned mount for MP5, 33, 53, 91, 93, 94, and G3. Maintains cheek-weld and supports night vision operation (Figure 14).
3.6 HK Mid Profile: Mid profile positioned mount for MP5, 33, 53, 91, 93, 94, and G3. Maintains access to ghost rings and supports NV operation (Figure 15).
3.7 Tactical Shotgun Mount: This is a saddle mount that requires no tapping. It is made for a Remington 870, 1100, 11-87. Other models are available for the Mossberg 500 and Benelli M-1 Super 90 (Figure 16).
3.8 Sig SG-550 Mount: Reflex Sight mounts at a low profile on the weapon’s receiver. No access to iron sights. The rail mounts under the diopter and bolts to the side of the upper receiver (Figure 17).
3.9 FN FAL Mount, Para Version Available: Reflex Sight is mounted at a low profile. The mount replaces the dust cover. No tapping required. No access to iron sights (Figure 18).
3.10 PVS-14 Ring and Mount: A mounting platform for the PVS-14 NV system behind the Reflex Sight. Base mounts to Picatinny rail and ring to NV tube. Ring has QD lever for fast removal. Also available for Litton 983 NV tubes (Figures 19, 20).
3.11 AK-47 Mount: Reflex Sight mounts at low profile. Rail slides over gas tube near rear sight aperture. AK type/barrel diameter needs to be specified. No access to iron sights (Figure 21).
4.0 APPENDIX A: Components of End Item 4.1 BASIC ISSUE ITEMS: M551, M552 ONLY M551, M552, qty.
Part N2076: Picatinny Bolt, Knurled Thumbscrew; qty. 1 Part N5800: Hex Wrench, 7/64; qty 1 (NSN 5305-01-510-8739) (NSN 5120-01-510-9374) Part N/A: Military Technical Manual; qty.
BASIC ISSUE ITEMS: SU-231/PEQ (M553) ONLY SU-231/PEQ (M553), qty. 1 Part N/A: Military Technical Manual; qty.
4.
48 Type N Batteries (1.
Hood Kit for Models M551 and M552 Part N2053 Nylon retaining washer for knurled picatinny bolt Part N5252A Hood Screws for all models (includes 5) Part N1101 Hood for Model SU-231 (M553) Part CR2053 Picatinny Locking Bar for Models M551, M552 Part N2020 Battery Cap for Model SU-231 (lM553): CR123 Batteries Part CR2022 49
5.0 APPENDIX B: Factory Contacts Customer Service/Repair ....................................................(734) 741-8868 Option #8 Technical Sales/Service .......................................................................(734) 572-2170 Shipping Address: L-3 EOTech Inc. 1201 E. Ellsworth Road Ann Arbor, MI 48108 USA EMAIL ........................................................................................general@L-3com.com Visit us on the web.....................................................
