installation manual

installation manual
Congratulations
on
your
purchase of the AR57!
hallmarks of the AR Five
Seven.
The AR57 PDW Upper Receiver is the most revolutionary design to date on
the AR platform.
Blending the near perfect ergonomics of the ubiquitous
AR15/M16 lower with a
light weight, fast handling
monolithic upper receiver
system chambered in the
most exciting new caliber,
the 5.7X28mm.
The ground-breaking 50rd
magazine, innovated by FN
Herstal, is the heart of this
exceptional system. Top and
forward mounted, above
the barrel for optimum balance and streamlined performance, allows the shooter to take best advantage
of cover and concealment.
There is no magazine in
the way to force the operator up off the deck and into
the path of incoming fire.
Reliability, simplicity, and utterly low maintenance are
The shooter will also notice that he
can place his support hand and arm
directly under the rifle where it belongs and obtain a perfect shooting
position in off –hand, kneeling, and
prone.
The upper receiver and rails are precisely milled from a monolithic block
of aircraft grade 7075 T6 aluminum. Any sighting systems mounted
on the rails will stay zeroed through
the most grueling conditions.
Reliability is its primary feature. Unlike many other receivers, there is
no gas system to become clogged
with carbon or fouling. The chamber
stays clean throughout extended shooting sessions. Simplicity is key with the
free sliding bolt, being the only moving
element, it removes instantly making
maintenance a snap.
The barrel is precision manufactured
for exceptional accuracy and extreme
durability and is available in multiple profiles. See your local dealer or 57CENTER.COM for more details.
WARNING:
PER RECEIVER ARE CLEAR
before attempting installation.
Please read the following
warnings before using or installing your AR57 upper receiver.
Keep the muzzle pointed in a
safe direction AT ALL TIMES.
This conversion is intended
for Mil-Spec or Factory spec
lowers in good working order.
Any tampering with the factory supplied AR57 will void
your warranty and could result in bodily injury or death.
To avoid accidental firing, BE
SURE BOTH LOWER AND UP-
Do not place your finger on
the trigger before, during, or
after installation, unless you
are aiming at your target,
ready to fire.
Keep the safety engaged at
all times unless you intend to
fire the weapon.
Before firing, please make
sure that your barrel is clear
of
obstruction,
including
grease, excessive oil, water,
or other potential obstructions.
Use only new commercial ammunition in good condition.
Should your AR57 malfunction in any way, stop immediately and contact 57CENTER.
Failure to take these precautions may cause serious injury or death. Please use your
AR57 responsibly.
Installation Guide
charging
handle
WARNING: Please read all
warnings on the first page
of this manual before proceeding.
Failure to do so
may cause serious injury or
death.
Removing the upper on your
AR-15 type rifle
1. Before attempting to remove your current upper receiver, remove the magazine
and check that the weapon is
clear of any ammunition. Pull
back charging handle (leaving
the hammer cocked and in
it’s lowest position) and move
the selector to the SAFE Position. Locate your takedown
pin and pivot pin.
pivot pin
takedown pin
3. Pivot the upper away from
the lower receiver by gently
pulling upwards at the rear of
the upper while gently pushing down on the stock of the
lower. Using the same dowel
or punch from Step 1, gently push the pivot pin until it
clicks out of place.
2. Using a small dowel or
punch to gently push the takedown pin as far as it will go.
4. Now lay the assembly down
with the left-hand side facing
up. Gently push the pivot pin
out until it stops. You should
now be able to easily separate the upper from the lower receiver.
Replacing the stock buffer
Important !! First determine what type of lower
receiver you intend to use.
Using the incorrect buffer
will cause your unit to fail.
A)
Carbine/Retractable
stocks require the (already
supplied) standard AR57
“Carbine” buffer (3.5”)
B) A2 type/ Fixed Rifle/
Butt stocks require an
“AR57-A2”
buffer
(6”)
(available through your local dealer or at 57CENTER.COM)
buffer
hold firmly
1. Examine diagram for
buffer and buffer detent
location.
2. Press firmly on the buffer face, then use a small
dowel or punch to press
downwards on the buffer
detent.
buffer
detent
A2
type
- 233.5
Carbine - 230
gm
gm
- 6”
- 3 5/8”
3. While maintaining pressure
on the buffer detent, slowly allow
the buffer to come forward until it
is free of the detent. Be careful
not to let go of the buffer, for it is
spring loaded. At this point, you
may release the detent while maintaining firm pressure on the buffer
as you slowly remove it from the
buffer tube. Remove the stock buffer from the spring and replace it
with the proper AR57 Buffer, then
carefully push the buffer and spring
back into the buffer tube.
Installing your new AR-57 Upper
standard equipped with 16” barrel - 4.36 lbs
1. Examine diagram. Do not
attempt to assemble with
magazine attached to upper.
pivot channel
takedown channel
3
4
2
2. With the pivot pin
fully extended, slide the
pivot channel of the
upper into the lower
receiver pivot point until
the holes are aligned.
Press firmly on the
pivot pin until it locks
the upper into place.
3. You may now insert
the bolt into the rear
of the upper, paying
attention to the “this
end up” markings on
the rear of the bolt.
4. Pivot the upper down
onto the lower receiver until it stops. The
takedown pin should
be aligned by default
as long as you have installed the pivot pin correctly. Press firmly on
the takedown pin until it
locks into place.
Magazine Insertion/Removal
forward end
Your AR57 Upper uses standard FN PS90
or factory
AR57 magazines. To insert
the magazine, place the forward end of the magazine
magazine latch
latch release
against the front sight at an
angle of approximately 30
degrees.
Pivot the magazine downward or from either side until it contacts the
magazine latch, then grasp the
latch release and pull rearward
while guiding the magazine into
place.
Once the magazine is
firmly in place against the upper,
allow the latch release to come
forward. To prevent damaging
your magazine, we suggest that
you avoid slamming the magazine into place. Check that the
magazine is tightly attached to
the weapon.
charging handle
Your AR57 is now full assembled, engage the
charging handle ..and it is ready for use.
Maintenance and
Cleaning
Limited Lifetime Warranty
Your AR-57 upper should not
require any cleaning further
than swabbing down the bore
and wiping down all surfaces
including the bolt face. Should
your firing pin ever require replacement, it should be done
using the AR57 Bolt Wrench
available at 57CENTER or
your local AR57 Retailer.
Use only commercial ammunition in good condition.
Shooting poor quality or reloaded ammunition may void
your warranty. Limited lifetime warranty covers materials and workmanship of your
57CENTER product.
General wear and tear from
normal use is excluded.
For all warranty issues or
claims, please contact:
WWW.57CENTER.COM
Tel (888) 900-5728
Fax (888) 900-5728