Holographic sights work
by providing a holographic representation of the viewing field onto
holographic film allowing the reticle to remain centered and fully
visible even in the event of obstructions or damage.
sights experience a point of impact shift away from the point of aim
when the sight is exposed to a temperature different from the
temperature at which the sight was zeroed. After zeroing the sight at or
near ambient temperature (73°F), the zero position will shift during
operating temperature changes. For sights manufactured after October
2016, the typical shift will be between approximately 1.4 and 1.8
minutes of angle (“MOA”). Due to manufacturing variations, however, a
particular sight has the potential to shift a maximum of approximately
3.5 MOA at -4°F and 122°F. Sights manufactured prior to October 2016
have the potential to shift approximately +/- 5 MOA at -40°F and 122°F.Due
to thermal drift, sights may not return to zero. The sights have the
potential of approximately a +/- 2 MOA zero shift upon return to ambient
(73°F) after being exposed to any temperature between -40°F and 122°F.Shifts
result from natural thermal expansion or contraction that is present in
various materials as they are heated or cooled, and is greater the more
extreme the temperature change. For example, when a sight is zeroed at
73° F then acclimated to 50° F, less shift occurs. On the other hand, if
zeroed at 73° F, then acclimated to 0° F, more shift occurs. The shift
may not be significant to shooters who use their sights at
close-quarters ranges. For instance, 3.5 MOA is a shift of .875 inches
at 25 yards, and is 3.5 inches at 100 yards. It also is worth noting
that thermal effects are evidenced to varying degrees in common optics,
as well as in rifle barrels and ammunition as the environmental
conditions change. In all events, to achieve optimum accuracy, the sight
zero should be verified whenever the sight is exposed to marked
temperature changes, and the sight should be re-zeroed as necessary.
optics experience varying degrees of parallax depending on use and
operating conditions. Parallax is an apparent change in the point of
aim resulting from a change in the position of the shooter. EOTech’s
sights have little parallax when the reticle is in the center of the
viewing window, which is the optimum sighting position and also is the
correct place for zeroing the sight. On the other hand, if the user is
looking through the sight at the outer edge of the sight window – an
off-axis view – the parallax error might be up to 4±3 MOA (or a total of
14 MOA across the viewing window) at 71° F (for a sight properly
zeroed). In other words, parallax can increase as the user’s view
approaches the edge of the EOTech viewing window. To put this possible
amount of off-axis error into perspective, 7 MOA equates to 1.75 inches
at 25 yards or 7 inches at 100 yards. Viewing through the center of the
window achieves the least parallax error. Parallax may increase as
temperature changes from 71° F. At operating temperature extremes of
-40° F or 122° F, there may be an additional 4 MOA of parallax.
sights are designed and tested to withstand punishing recoil from a
variety of firearms. HWS units have been used on the military's M2
.50BMG machine gun, Smith and Wesson .500 and .460 pistols in Africa,
shotguns of all sizes, and can even handle the reverse recoil found in
air guns and crossbows.
Please see the holographic sight vs. red dot sight page of this website for a comparison.
Typical tactical applications are with shoulder-mounted small arms weapon systems, such as these:
The HWS is also used extensively on less-lethal launching platforms:
Other applications include:
In all cases, HWS greatly enhances speed, accuracy, ease of use, and vision maintenance.
Advantages of EOTech’s HWS for CQB include:
Yes. The HWS can be used with extreme accuracy for engagement to 300 meters.
The HWS provides a much greater field of view than a magnified scope,
providing the operator with more visibility in a tactical engagement
However, the clear objective advantage is in close-quarters battle
(CQB) situations, in which speed is a must. The HWS is an obvious choice
for an M16 or M4, weapons used for both CQB and longer-range
Need to increase your visability for longer range shooting? Look at
partnering the HWS with our G33.STS magnifier. With a magnification of
3x and an adjustable diopter, the target will be in clear focus allowing
the operator to make a more precise shot. The switch-to side mount
allows for incredilby fast transition times between close quarter and
mid to long range shooting making this combination the best of both
there is none. Unlike a laser or red dot sights, the holographic image
projects no forward light onto the target. So there is no
The projected reticle is visible only to the operator. The operator
remains completely hidden down-range, even from night vision systems.
In addition, there is no muzzle-side reflective glare from coated
lenses like on red dot sights, scopes, or binoculars. The HWS does not
need any costly add-on filters that would also significantly reduce the
effective light transmission and make the target less visible.
Yes. EOTech HWS are water resistant. The depth to which each model can be submerged varies.
MOA stands for minutes of angle.
The windage shaft and the elevation shaft on your HWS move in
approx. half-MOA increments. This means every tactile click or single
adjustment of the shaft moves your point of aim approx...
HWS is equipped with an integral mounting platform to interface
directly with any standard 1 Weaver dovetail or Picatinny Mil spec 1913
Other mounting options include:
Most standard tactical weapons have 1 or 2 mounting solutions,
which vary in design. They allow co-witness of the iron sights, access
to the iron sights, and cheekweld positions. Make sure to mount the HWS
with the battery compartment facing the muzzle and away from the
Eotech sights are designed to co-Witness with iron sights on the
standard AR15 platform. Sights with side buttons and/or factory equipped
quick detach levers will co-witness in the lower 1/3 of the window. All
other models will co-witness in the center of the window. This is based
on the model chosen at time of purchase.
Note: When adjusting to iron sights, you are moving the
image to the fixed point of aim so your adjustment dials on the sight
are in reverse or mirrored.
for Targets to aid with the zeroing of your new Holographic Weapon
Sight? Click on the attached PDF files below to find the one best
suited for your requirement.