Primary Arms GEN II User manual

GEN II
WITH PATENTED .223/5.56, 5.45X39, .308 ACSS®RETICLE
PRISM SCOPE
Please read page 3 for
Clear Reticle Instructions!
STOP
Page 3
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Page 6
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Achieving a Clear Reticle Picture
READ THIS FIRST
Reticle Illumination Knob
Getting to Know ACSS
Establishing Zero
Bullet Drop Compensation
Wind and Bullet Drift
Leading your Target
Ranging
Specications
Lens Care
5X

Thank you for choosing this Primary Arms optic.
If you have any questions about your new optic or any of our other products, visit us at www.primaryarmsoptics.com,
email us at [email protected], or give us a call at 713-570-1910. The customer service team at our
headquarters in Houston, Texas will respond promptly.
If you have any problems with a Primary Arms product, we urge you to contact us immediately and let our customer
service professionals handle the situation for you. There is no need to return the scope to your retailer.
© Copyright 2018 PRIMARY ARMS, LLC
is a registered trademark of PRIMARY ARMS, LLC
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Due to this scope’s internal prism design,
when viewed at certain angles and
distances the reticle may appear canted
(tilted to the left or right). Each individual
scope has been checked for correct reticle
presentation and illumination. The scope
should be mounted on a rie and viewed
using the correct eye relief, and the reticle
will appear in its proper alignment.
Our high quality anti-reection objective
lens attachment is also available, part
numbers PA5XKF and PA5XKF-FDE.
21
GEN II
WITH PATENTED .223/5.56, 5.45X39, .308 ACSS®RETICLE
PRISM SCOPE
5X

3 4
ACHIEVING A CLEAR RETICLE PICTURE
Setting the adjustable diopter ring (E) at the rear of the eyepiece is a critical rst step to successful precision shooting.
Looking at a featureless light background like a clear blue sky or blank wall, the reticle should appear sharp and crisp.
If it does not, you need to adjust by turning the diopter ring (E). Look at the scope with quick glances and adjust until
the reticle is clear at rst glance. This is a one-time adjustment. Because everyone’s eyes are different, the ideal
adjustment will vary from person to person.
The reticle details may appear small when not looking at the ranges they are set for, beyond 300 yards. Shooting at
those ranges is best done from a well-supported position.

3 4
RETICLE
ILLUMINATION
The illumination knob on the top of
the scope is marked with numbers of
increasing brightness from 1 to 5 in each
direction from 0 or “off”. There are two
“off” settings, divided between 5 red
partial illumination settings and 5 green
partial illumination settings. The knob
cap unscrews counter-clockwise, holding
a CR2032 battery with the positive (+)
side facing towards the cap. Reticle
illumination at the lower settings is
useful in low light situations like sunrise
and sunset. The highest two settings
are “daylight bright” settings. Using
these settings in low light situations
will overpower your eye’s ability to
see the target and make the reticle
appear distorted. The right amount of
illumination creates a clear contrast
between the reticle and your intended
target, without straining the eye.

6
THE REMOVABLE
BASE AND SPACER
THE REMOVABLE
1913 MIL STD RAIL
Thread locker is recommended on the base and
accessory rail screws. The 3mm hex base screws may
be removed for use with AR-15 carry handle upper
receivers in conjunction with our Steel Knurled Head
Thumb Screw, part no: 92581A320.
The 5x Prism Scope features a removable spacer in
between the base and the scope body. Use the spacer
for rearms with straight line stocks such as AR-15s.
Removing the spacer brings the scope body lower for use
with rearms with stocks located lower than the receiver,
like AK-47s. The scope body is compatible with full size
ACOG®style mounts with or without the spacer installed.
The top mounted 1913 MIL STD rail (B2) is useful for mounting a reex sight or other accessories above the prism scope. It
is removable by turning the four T10 torx screws (A1) counterclockwise and removing them. Removing the 1913 rail shaves a
bit of weight and bulk from the scope. To replace the 1913 rail, torque the screws to only 5 inch pounds after applying a small
amount of blue thread locker. Do not overtighten the screws, this is a very small amount of torque!
5

6
GETTING TO KNOW
THE ACSS®RETICLE
The ACSS®(Advanced Combined
Sighting System) is a giant leap
forward in reticle design that uses
bullet drop compensation correlated
with range estimation, wind and
moving target leads in one simple
to use system. The ACSS reticle
increases rst hit ratio and decreases
time on target dramatically. It is a
two-part reticle that allows you to be
very fast from 0-300 yards and very
accurate from 400-800 yards.
5

DIALING IN FOR YOUR BARREL LENGTH AND AMMUNITION
Using a bipod or sandbags, preferably on a bench or in the prone position, adjust your turrets to dial in your point of impact
to the center dot. Each click is 0.33 MOA, or 0.33 inch at 100 yards.
Your point of impact will vary depending on type of ammunition, barrel length, and altitude above sea level. For 5.56 NATO
and 5.45x39 loads, match your ammunition type and barrel length with your altitude above sea level, and zero your scope
at the distance indicated. For other loads, nd your bullet weight and velocity and zero your scope at the distance indicated.
Plus (+) and minus (–) numbers indicate desired bullet impact in inches above or below your point of aim. For example, a
shooter ring M855 using a 16” barrel will want to sight in a half inch high at 1,000 ft. above sea level, dead on to point of
aim at 2,000 ft. above sea level, and a half inch low at 3,000 ft. above sea level, zeroing at 100 yards.
5.56mm
M855 62gr
14.5”Barrel
16”Barrel
20”Barrel
M193 55gr
14.5”Barrel
16”Barrel
20”Barrel
1000 ft.
+1.0
+0.5
0
2000 ft.
+0.5
0
-0.5
3000 ft.
0
-0.5
-1.0
0 Distance
100 yards
100 yards
100 yards
1000 ft.
0
+1.0
0
2000 ft.
0
+0.5
0
3000 ft.
0
0
-0.5
0 Distance
50 yards
100 yards
100 yards
55gr VMAX Zero at 100 yards 3100 - 3200 fps
60gr VMAX Zero at 100 yards 3050 - 3150 fps
69gr SMK Zero at 100 yards 2900 - 2950 fps
75gr HNDY +0.5” at 100 yards 2700 - 2750 fps
77gr SMK +1.0” at 100 yards 2700 - 2750 fps
M80 147gr +1.0” at 100 yards 2650 - 2700 fps
168gr SMK +1.0” at 100 yards 2600 - 2650 fps
.223 Remington
7.62x51mm / .308 Winchester
123gr VMAX Zero at 100 yards 2600 fps
123gr VMAX Zero at 50 yards 2550 fps
123gr VMAX Zero at 200 yards 2500 fps
7n6 53gr
16”Barrel
1000 ft.
0
2000 ft.
0
3000 ft.
-0.5
0 Distance
100 yards
5.45 x 39mm
6.5 Grendel
120gr SST Zero at 100 yards 2460 fps
6.8 Rem SPC
87

GETTING TO KNOW
YOUR BULLET DROP
COMPENSATION (BDC)
Gravity will affect your bullet’s trajectory (or
path). The BDC ladder starts at the center dot
and nishes at the 800 yard mark indicated
by the number (8). Simply aim using the hash
mark that coincides with the range to target.
For targets at ranges between hash marks
you can split the difference. For example, for
a target at 450 yards you should aim halfway
between the 400 and 500 yard hash marks.
We recommend that you establish a steady,
supported position in order to utilize the BDC.
87

UNDERSTANDING
THE WIND AND
BULLET DRIFT
109
Notice the 5mph wind hold dots aligned with
the BDC. Wind will cause the bullet to drift
left or right depending on wind direction.
Understanding wind is important, as even
a 2mph wind at a 90 degree angle to the
bullet’s path can cause the bullet to drift over
10” at 600 yards. The wind holds correspond
to the BDC ladder and represent how much
a 5mph wind will push the bullet at that
range. For a wind pushing left to right, use
the dots on the right side of the reticle. For a
wind pushing right to left, use the dots on the
left side of the reticle. You can use the dots
as a starting point in different conditions. For
example, if you have approximately a 2.5
mph wind, you would hold half-way to the
dot. If you have a 10 mph wind, you would
double the hold of the dot, and so on.

LEADING YOUR
TARGET
The average target moves at 8.6 mph. The
“lead dots” are set for a target moving at a
90-degree angle to the shooter. Depending
on the direction of the target’s movement,
re using the “lead dots” instead of the
center dot in red. They are best used at 100
to 300 yards and are highly effective on
targets of opportunity.
109

HOW TO RANGE YOUR TARGET
ACSS automatic ranging greatly reduces the time between spotting the target through the scope and ring a correctly aimed
shot. There is NO need to run data, do math, or physically adjust the scope’s settings. Wrong range estimation is the number
one reason shots are missed—ACSS directly addresses this issue!
Knowing the proper range of your target is crucial in order to use the right hold on the BDC. The horizontal bars range estimate
center mass on targets 18” wide, and predators or small game with an approximately 18” measurement from shoulder to hip.
Simply line up the target’s width with the appropriate line to determine range to target. For example, an 18” wide target that
appears to be the same width as the ranging line with a “6” next to it will be 600 yards away. This method is useful when the
target’s height is partially obscured, as with a target in tall grass.
Bullet drop compensation is correlated with the horizontal ranging. Once you have determined range to target using horizontal
ranging, you are already using the correct holdover to re accurately (assuming no need to shift left or right due to wind).
Vertical ranging is calibrated for a 5’10” tall target. Looking through the scope at the target, line up the bottom of the target with
the lowest line on the ranging ladder. The line that coincides with the top of the target indicates the distance to the target. For
example, if the top of the target touches the second line from the top, the target is 400 yards distant. The ranging lines may
be used as reference points to make more precise, yet quick ranging determinations. For example, a 5’10” target with its top
midway between the top ranging line and second ranging line will be approximately 350 yards away.
1211

1211

Specications may vary and are subject to change without notice.
SPECIFICATIONS
FEATURES
Magnication: 5x
Objective lens diameter: 36 mm
Eye relief: 2.5" - 3.0"
Ocular lens diameter: 25 mm
Red or green reticle illumination
Fast focus eyepiece
Waterproof: Meets IP67 standard
Fog resistant
Fully multi-coated lenses
Nitrogen purged
Flip-up lens covers included
Exit pupil: 7 mm
Field of view: 18.8 feet @ 100 yards
Click Value: 0.33 MOA
Total windage and elevation adjustment: 35 MOA
Length (w/o Lens Covers): 5.81”
Weight (w/ Battery, w/o Lens Covers): 18.4 oz.
6061 aluminum, anodized matte black
6061 aluminum, at dark earth coated nish
Uses one CR2032 battery (included)
Lifetime warranty (see website for details)
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1413
WARNINGS: Always ensure your rearm is unloaded (chamber empty and magazine removed) before installing
optics or accessories.
WARNINGS: Improper installation of rearm component parts or accessories may result in death or serious
personal injury. If you are not properly trained in the installation of these parts, have them installed by a
gunsmith or armorer.
1. Treat every rearm as if it were loaded
2. Never let your muzzle cover anything you are not willing to destroy
3. Keep your nger off the trigger until your sights are on target
4. Be sure of your target and what is behind it
!
!
LENS CARE
REMEMBER: THE FOUR RULES OF FIREARMS SAFETY
Please do not use any organic solvent such as alcohol or acetone on your scope. First, blow dust or any foreign
objects off of the lens. Then, use a soft cotton or microber lens cloth to clean any ngerprints or smears off the lens.
Alternatively, you may use a piece of professional lens paper for further cleaning, if necessary.

15 16
NOTES:

15 16
NOTES:

MANUFACTURER PART NUMBER
PAC5X-GENII-ACSS-5.56
PAC5X-GENII-ACSS-5.56-FDE
8 18500 01314 3
8 18500 01315 0
MATTE BLACK
FLAT DARK EARTH
UPC FINISH
WARRANTY
Your Primary Arms 5x Prism Scope is
covered by the Primary Arms Lifetime
Warranty. If a defect due to materials or
workmanship, or even normal wear and tear,
has caused your product to malfunction,
Primary Arms will either repair or replace
your product. You can nd more details at
www.primaryarmsoptics.com
Email: [email protected]
Phone: [phone]
www.primaryarmsoptics.com
GEN II
WITH PATENTED .223/5.56, 5.45X39, .308 ACSS®RETICLE
PRISM SCOPE
5X