Operations Manual

.223 CALIBER
MAINTENANCE
Your DPMS rifle is based on military rifle design and is very rugged but proper maintenance
is necessary to keep it in good working condition.
Field Stripping/Disassembly
1. Press take down pin in from left of lower receiver (it may be necessary to use a punch
as the fit between upper and lower may be very tight). Pull it out the right side until it
comes to a positive stop.
2. Pivot lower receiver down and away from upper portion of receiver.
3. Press front pivot pin in from left side of lower receiver and pull out right side until it
comes to a positive stop.
4. You can now separate the upper and lower receivers.
5. Pull charging handle to rear and remove bolt and carrier
assembly.
6. Remove charging handle by pulling it backwards to key
way and down out of receiver.
7. Push in firing pin
retaining pin right-to-
left of bolt carrier and
remove it by pulling it
out to the left.
8. Tilt bolt face up and
remove firing pin.
(Page 13, Picture 8)
9. Push bolt in towards
the carrier until it
rotates and comes to a
stop, then turn cam pin
90°. (Page 9)
10. Remove cam pin by
lifting it out away from
bolt and carrier.
11. Pull bolt forward out of carrier.
(Page 13, Picture 11)
12. Depress buffer, maintaining pressure as
buffer is under spring tensions, to prevent
it from being ejected when buffer
retainer is depressed. Depress buffer
retainer to permit buffer and spring to
move forward.Then depress hammer to
allow the buffer and spring to continue to
move forward and be removed from receiver extension. (Page 13, Picture 15 a & b).
12
2. Pivot upper receiver
from lower receiver.
3. Push receiver
pivot pin.
4. Separate upper and
lower receivers.
5. Pull back
charging handle and bolt carrier.
Remove bolt carrier and bolt.
6. Remove charging
handle.
PULL BACK
AND DOWN
1. Push take down
pin as far as
it goes.
7. Remove firing
pin retaining pin.
7a. Put bolt assembly
in lock position.
DO NOT OPEN OR
CLOSE SPLIT END OF PIN
UNLOCKED
POSITION
PUSH I N