AR-15 Aluminum 6-Sided Mid-Length Free Float Forend
with Slotted Barrel Nut
A.5.10.2537
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Aluminum 6-Sided Mid-Length Free Float
Forend
2
Slotted Barrel Nut
2
AR-15 Aluminum 6-Sided Mid-Length Free
Float Forend with Slotted Barrel Nut
[3] 10-32 x 3/8" Set Screw
AR Wrench
Wrench
Allen Head Wrench
Warning: When handling a firearm, always follow the proper handling procedures at all times.
!
Failure to follow
these procedures could result in serious damage, injury, or death. ATI is not responsible for damage to property,
injury, or death resulting from improper installation, misuse or modification of products. If you are not
comfortable completing any of the following steps, or do not have the proper tools enlist the help of your
local gunsmith. ATI is not responsible for components that are damaged due to improper installation.
OEM Forend Removal
A
!
Point the rifle in a safe direction and place the saftey in
the "on" position. Next remove the magazine, pull
back, and carefully inspect the chamber to be sure the
rifle is unloaded.
1
Begin by removing the original handguard, depress the
delta ring (contains a strong compressed spring) and
remove one side of the handguard and then the other as
seen in Figure 1. If you cannot depress the delta ring
enough to remove the handguard there are 2 options:
1.) The Buddy System - With the help of another party,
depress the delta ring while the other party removes each
side of the handguard.
2.) Purchase a handguard removal tool
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AR-15 Aluminum 6-Sided Mid-Length Free
Float Forend with Slotted Barrel Nut
OEM Forend Removal -Continued
A
2
Detach the lower and upper receiver by depressing and
removing the the front and rear take down pins as seen in
Figure 2. Next, release the charging handle, remove the
bolt, and then remove the charging handle.
Figure 1
2
3
Next, remove the Flash Hider by loosening with a 3/4"
wrench and threading it off as seen in Figure 3.
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AR-15 Aluminum 6-Sided Mid-Length Free
Float Forend with Slotted Barrel Nut
OEM Forend Removal -Continued
A
4
Remove the taper pins from the front sight base by using
a small punch to drive out the pins from the left side of the
rifle as seen in Figure 4 (Non-Ejection Port Side) and
coming out on the right side (Ejection Port Side).
4
5
Once the taper pins have been removed, slide both the
front sight and the front handguard guide off the barrel as
seen in Figure 5.
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AR-15 Aluminum 6-Sided Mid-Length Free
Float Forend with Slotted Barrel Nut
OEM Forend Removal -Continued
A
6
Next, using a AR-15 wrench as seen in Figure 6A,
remove the delta ring by lining up the notches in the
wrench with the delta ring nut and loosening. Then slide
the delta ring off the barrel as seen in Figure 6B.
6A
6 Sided Forend Installation
B
1
6B
Begin by sliding the barrel nut onto the barrel and hand
tighten to the upper receiver until the rear of the barrel nut
is flush against the receiver. Complete the tightening by
using the AR-15 wrench as seen in Figure 1.
NOTE: Torque to 30-35 foot-pounds with a 5 pin wrench.
Do not over torque the barrel nut during installation. Any
damage due to over tightening or applying excessive
torque to the Barrel Nut is not covered under the
manufacturer’s warranty.
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AR-15 Aluminum 6-Sided Mid-Length Free
Float Forend with Slotted Barrel Nut
6-Sided Forend Installation -Continued
B
2
Make sure that one of the holes in the barrel nut lines up
with the opening for the gas tube, as the gas tube will be
re-installed as seen in Figure 2.
2
3
Install the 6-sided free float forend by placing the forend
over the barrel and threading it onto the barrel nut, thread
the free float forend so the the forend and barrel nut are
lined up flush to the receiver as seen in Figure 3.
3
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AR-15 Aluminum 6-Sided Mid-Length Free
Float Forend with Slotted Barrel Nut
6-Sided Forend Installation -Continued
B
4
Install the (1)10-32 x 3/8" set screw into the last screw
hole at the rear of forend bottom position as seen in
Figure 4A . Make sure the forend is aligned with the barrel
nut so that the set screws will locate into one of the slots
on the barrel nut. Thread the set screws until flush with
the forend as seen in Figure 4B.
4A
5
Next, reinstall the gas block and gas tube. If using a front
sight, re-install the front sight and gas tube, next make
sure the taper pins are re-installed from the right side
(Ejection Port Side). Reinstall the flash hider.
6
Finally, reinstall the charging handle then the bolt and reassemble the upper receiver to the lower receiver as
seen in Figure 5.
4B
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