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512.XBOW was designed with the
crossbow hunter in mind. The
utilizes the unique properties of holography to create optimal range
scaling data in a heads-up display. A pre-calculated ranging scale
is projected on the target and measures the back to the belly of a
standard whitetail deer (18"). Simply position the base of the
scale on the belly and read the yardage line that crosses the back.
This integral ranging pattern eliminates unnecessary body movement
or added noise while in the stand since the ranging and aiming
information are both displayed in the same sight picture.
model offers four (4) Ballistically compensated 1 MOA aiming dots (see
figure on left). These dots will provide precise points of aim
throughout the range of your crossbow. In addition to the aiming
reticle, an Integral Range Finder is included to assist in determining
the distance between you and the deer. This range finder can provide
distances from 20-60 yards in increments of 10 yards.
HOW TO USE THE INTEGRAL RANGE
unique properties of holography have made it possible to create optional
range scaling data integral within the heads-up display. The image of a
pre-calculated ranging scale is projected out at the target plane and
measures the back to the belly of a mature whitetail deer (18"). Simply
position the base of the scale on the belly (see Fig. 2) and read from
where the back intersects the scale – it’s that easy. With the integral
ranging pattern, there is no unnecessary body movement or added noise
while on stand. Range information is displayed within the sight picture
for when you are ready to shoot.
ZEROING THE SIGHT
The top dot must be zeroed at 20
yards for the ballistic calculations to work. To do this, place a target
out at 20 yards and safely fire. Adjustments in Windage and Elevation
can be made on the right side of the sight. Keep in mind, each click
represents 1/2 " adjustment at 100 yards. Once the top dot is zeroed,
locate the Ballistic Wheel included in the packaging and align your
crossbow speed (fps) with the opening of the window. This will indicate
what each of the remaining dots will be zeroed to. To confirm, move to
those distances and safely fire.
calculated using 349gr bolt and 100gr field tip. Different variations
may affect POI (point of impact).
RECORD YOUR BALLISTICS
Included in the packaging is a
reticle sticker. Once you know your zero for each dot, simply write it
down on the sticker and affix it to your crossbow limb for reference.
The L-3 EOTech HOLOgraphic Weapon
Sight (HWS) is a revolutionary sighting system based on advanced
holographic technology. The HWS enhances target acquisition, improves
accuracy, and provides more control over your shooting environment. The
HWS fills the needs of all shooters from the novice to the most advanced
professional. EOTech's objective is to give each and every customer the
quality, commitment, and service expected from the sighting industry
• 2 x
Type N or AA alkaline batteries
7/64" Allen wrench
Knurled Weaver® Bolt
The HWS uses laser light to
illuminate a holographic reticle pattern embedded in the heads-up
display window and forms a virtual image of a reticle pattern. The
shooter looks through the heads-up display window and sees a bright red
image of a reticle pattern projected onto the target plane. There is
absolutely no light projected onto the target plane. The HWS has no
EOTech sights are proudly manufactured in the USA
* The 512 Models are
NOT Night Vision compatible
Holography - 100% Parallax Free
Fog proof Internal Optics
0.5 MOA (1/2" at 100 yards)
+/- 40 MOA Travel
(Adjustable for Width)
1" Weaver or MIL-STD-1913 "Picatinny" Rail
Return to Zero
Repeatable to 1 MOA after Re-Mounting
1.2" x 0.85" (30mm x 23mm)
1/8" Solid Glass
Shatter Resistant Laminate 3/16" Thick
30yds (28m) at a 4" Eye Relief
512.XBOW: Ballistic Reticle w/Ranging Dots for
Brightness Adj. Range
146,000:1 brightest to lowest
NV Brightness Range:
1280:1 with NV Switch Engaged
Function Button Location
(2) AA Alkaline, Lithium or Rechargeable Battery
Battery Life (At Level 12)
600 Alkaline / 1,100 Lithium
20 Daytime Settings with Scrolling Feature
Auto Battery Check Indicator
Flashing reticle upon start-up
At 8 hrs- programmable to 4 hrs
5.4" (137 mm)
2.0" (50.8 mm)
2.25 (57 mm)
-40ºF to 150ºF
Holographic Weapon Sight must be exported from the United States in
accordance with Export Administration Regulations ECCN 0A987.
Diversion contrary to U.S. law is prohibited. In accordance with U.S.
law (Title 15 CFR part 746 and Supplement No. 1 to Part 774; and Title
31 CFR) resale/re-export or transfer of Holographic Weapon Sight
Models 552, 551, 512, 511, 4X magnifier and 3X magnifier to certain
designated countries is prohibited without prior written consent of
the U.S. Department of Commerce. The Holographic Weapon Sight Models
553, 557 and 555 are controlled under U.S. International Traffic in
Arms Regulations (ITAR) and may not be exported without proper
authorization by the U.S. Department of State.
Models 511, 512, 551, and 552 are
equipped with a protective hood. This hood is pre-assembled at the
factory and is non-removable. Should your hood require maintenance
please contact our Customer Service Department at (702) 324-6463 or
CAUTION- Tampering of Hood lock
screws will void warranty.
commonly available Type N or AA alkaline 1.5 V batteries power your HWS
depending on the model. An initial set of batteries comes with your
sight. The HWS is designed to maintain constant brightness at a
particular setting as the batteries drain down. The reticle brightness
will not fade gradually as the batteries run down but rather shut down
abruptly. The first indication of the batteries draining is the reticle
blinking when the unit is turned on (see Electronic Features 1).
indication of low batteries 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. If the reticle pattern blinks off
and on during recoil or turns off suddenly, replace the batteries.
Please read and follow the battery replacement and battery check
procedures described in your user Operator's Manual.
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 Eveready Energizer™ batteries
with the HWS. It is always good practice to replace the batteries with a
fresh set before a mission.
CAUTION-There is a 12 V battery
that is approximately the same size as the Type N 1.5 V battery. DO NOT
USE 12 V battery. They will severely damage the sight.
common AA size batteries power your Model 512 HWS. An initial set of AA
size alkaline batteries comes with your sight. EOTech recommends using
Energizer Alkaline or Lithium AA batteries. Lithium AA batteries offer
longer life, particularly at temperatures below freezing. For this
reason Lithium AA batteries are recommended for cold weather operations.
However, we should note that the battery checking function which is
based on the characteristics of Alkaline batteries does not operate
properly with Lithium 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 2) . 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 re-installed or the water proofing may be
compromised. To re-install the battery compartment, point the sight
towards the ground and slide battery compartment onto the 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 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 batteries are
left in the sight backwards, they will be drained of their power.
All electronic controls are via push-button switches located at the rear
of the unit housing as shown in Figures 1. To ensure proper operation of
the push button switches we recommend pressing firmly on the center of
Depressing the Up or Down Arrow
push-button switches will turn the sight ON at Level 12. See step 4
under this section for description of Auto shutdown. The sight will
automatically perform a battery check every time it is turned on. If the
batteries have less than 20% of life left, the sight will turn on with
the reticle image blinking on and off for 5 seconds. If the remaining
battery life is more than 20%, the sight will turn on with a steady
reticle pattern. The battery condition can be checked any time by
turning the sight off and back on.
To turn the sight off depress
both UP and DOWN arrows simultaneously. Verify by looking through
heads-up display window.
Push-button switches vary the
brightness intensity of the holographic reticle pattern. Depressing and
releasing the push-button switches moves the brightness level UP or DOWN
one (1) step from the previous setting. Depressing and holding the up
arrow or down arrow switch will change brightness level up or down
continuously in steps. There are twenty (20) brightness settings
providing a dynamic range of 146,000:1 from the lowest setting to the
The HWS is equipped with auto
shutdown capability. If the sight is turned on by depressing the UP
button, it will automatically shut itself OFF 8 hours
after the last push-button control
is used. The sight
will automatically shut OFF after 4 hours if it is turned on by
depressing the DOWN button.
WINDAGE AND ELEVATION ADJUSTMENTS
features click mechanisms for elevation and windage adjustments. The
elevation and windage adjustment are located on the Right-hand side of
the sight (Figure 1). The knob towards the front is your windage
adjustment and the knob towards the rear is your elevation adjustment
(Figure 1). 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 point of impact RIGHT, turn the windage adjustment screw clockwise;
to move the point of impact LEFT, turn the windage adjustment screw
elevation and windage adjustments have been initially set at the factory
such that the line of sight to the center of the reticle is parallel to
the mounting rail on the weapon. The sight should be close to being at
zero with a properly installed mounting rail. Please do not turn the
adjustments before mounting the sight on the firearm. Be sure to check
that the mount and the sight remain secured after the first shots are
CAUTION-When encountering a sudden
increase in resistance in these adjustments, the end of the adjustment
range has been reached. DO NOT TRY to turn the adjustments any farther
or serious damage may occur to the sight.
LASER SAFETY ISSUES
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. The illuminating beam can become accessible to the eye if
the housing is broken. Turn the sight off immediately and return the
broken unit to the factory for repair.
1. Locate the bolt and locking
bar on the underside of the sight. Loosen the bolt and the locking bar
with the Allen wrench (7/64")
2. Place the bolt within a groove
on the top of the rail. Individual preference and the specific firearm
determine the optimal positioning to any specific groove on the rail.
3. Make sure the bolt is inserted
fully into the mount’s groove and push the sight as far forward as
possible. Tighten bolt.
Loosen bolt just enough to mount and dis-mount the sight.
Do not back bolt out completely to avoid losing the mounting hardware.
A Picatinny (MIL-STD-1913) rail cannot be installed directly on some
weapons. EOTech sells mount adapters to provide a standard Picatinny
rail for various weapons used in today’s military and law enforcement
applications. Contact a factory representative if you are unclear on the
mounting adapter you should use on your weapon.
BORE SIGHTING AND ZEROING
Bore sighting is a good
preliminary procedure in achieving proper alignment of your sight to the
firearm. If the rail is not mounted parallel to the barrel, major
elevation adjustments may be accomplished by shimming the dovetail rail.
It is important not to use the elevation adjustment of the sight for
major adjustments. Your sight’s internal elevation and windage
adjustments should be reserved for fine-tuning to achieve zero at the
called for distance. Final zeroing of your firearm and sight should be
done with live ammunition and based on your expected shooting distance.
If you anticipate most of your shooting at short range, zero in at 50
yards (45.7m). Groups of three to six shots will be useful for averaging
the point of impact.
The HWS complies with Part 15 of
the FCC Rules. Operation is subject to the following conditions:
(1) this device may not cause harmful interference and
(2) this device must accept any interference received, including
interference that may cause undesired operation.
MAINTENANCE AND CARE
Your HWS is a precision
instrument that deserves reasonably cautious care.
The following tips are provided to ensure long lasting use of the sight.
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. All moving parts of the sight
are permanently lubricated. Do not try to lubricate them.
3. 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
4. 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
ATTN: Service Department
1201 E. Ellsworth Road
Ann Arbor, MI 48108 USA
You can contact EOTech’s Customer
Service Department at:
(734) 741-8868, and press Option 8, or visit their webpage
To Ensure proper operation of the
push button switches we recommend pressing firmly on the center of the
If your HWS should need repair,
please contact EOTech's Customer Service Department at the number shown
above to receive a return authorization number for repair. Send the
sight and return authorization number to the address above and include
your name, address, and telephone number, as well as a written
description of the problem you are encountering. Also, include your
receipt at the time of purchase. Whenever possible, ship the sight
in its original box.
The HWS is equipped with mounting
hardware to attach to a standard 1" dovetail or Picatinny (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 maximum elevation and windage adjustments. We
strongly recommend you have the rail installed by a qualified gunsmith.
To mount the sight, please follow these steps.
The elevation and windage
adjustments are shown in Figure 3. For both elevation and windage, each
click will change the bullet’s point of impact 1/2 Minute of Angle
(MOA), which translates to 1/4 inch at 50 yards (0.64 cm at 45.7 m), 1/2
inch at 100 yards (1.3 cm at 91.5 m). Also, one full rotation of either
knob will change your point of impact 10 MOA. This translates into 5
inches at 50 yards (12.7 cm at 45.7 m), 10 inches at 100 yards (25.4 cm
at 91.5 m). To move the point of impact UP,
turn the elevation adjustment screw counterclockwise; to move the point
of impact DOWN, turn the elevation adjustment screw clockwise.
EOTech's Frequently Asked Questions
uses state-of-the-art digital electronics design. Twenty
brightness levels (plus 10 additional NV settings) ensure proper brightness control in either low
light or very bright sunlight. An on-board microprocessor provides
automatic battery check indicator, up/down brightness scrolling
and programmable auto shutdown features. All electronics are fully
encapsulated in shock absorbing resin compound.
holographic patterns have been designed to be instantly visible in
any light, instinctive to center regardless of shooting angle, and
to remain in view while sweeping the engagement zone. Reticles are
designed as large, see-through patterns to achieve lightning quick
reticle to target acquisition without covering or obscuring the
point of aim.
employs a true Heads-Up Display that eliminates blind spots,
constricted vision, or the tunnel vision associated with tube
sights. All user controls are flush to the HWS's streamline
housing with no protruding knobs, battery compartments or mounting
rings blocking vision at the target area. True, 2 eyes open
shooting is realized. Instant threat identification is achieved by
maximizing the operator's peripheral vision and ultimately gaining
greater control of the engagement zone.
Magic of Holography
In holography, all the information required to reconstruct the
reticle image is recorded everywhere in the Heads-Up
display window. If the window is obstructed by mud, snow, rain,
etc., the HWS remains fully operational, with point of aim/impact
being maintained. Even in such extreme cases where the laminated
window is shattered, the HWS is fully functional! As long as the
operator can see through any portion of the window, the entire
reticle pattern is visible on target...the operator can still
engage with confidence.
The HWS has
been designed and tested to provide consistent, reliable
performance even in the most hostile operational environments. It
is waterproof, fog proof, shockproof, and temperature proof.
The HWS is designed
to withstand Mil-Spec drop tests and still remain fully
operational and hold zero. The HWS has been extensively tested in
a punishing recoil simulator generating 3,500 G's of acceleration
in less than 0.5 milliseconds (the recoil of a .454 Casull
revolver) as well as various environmental chambers).
Up Display is constructed with a 3 layer, shatterproof laminate
glass that is 3/16" thick for added durability. Additional
protection of the Heads Up Display is provided with a "roll bar"
does not emit any muzzle side position revealing light
signature...the projected reticle pattern is visible only to the
operator. Even Gen III night vision equipment cannot detect muzzle
side signature of the operator's position.
surfaces are flat and treated with anti-reflective coatings
eliminating additional muzzle side signature due to reflective
glare. No need for costly glare elimination filters that reduce
the effective light transmission and further dim the target area.
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