Owner's Manual

32 33

Press the captured handguard retention pin through from

the left side to the right side of the MDR receiver until it

snaps into position, flush on each side. (Fig. h-6)

Tighten handguard retention screws with a torque wrench,

using a T25 head, to 30 in/lb. (Fig. h-6)

10.

Fig. h-6

Install the handguard on the MDR by sliding it over the

barrel assembly, Desert Tech logo end first, with the rail

at the 12 o’clock position. (Fig. h-6)

Fig. h-5

On the MDR handguard, pop the captured handguard retention

pin out to its open-most position. (Fig. h-5)

Ensuring the bolt head is fully forward, install the bolt carrier

assembly into the back of the MDR upper receiver first ensur-

ing the charging handle is forward. Next, align the slots of the

operating rod guide with the MDR upper receiver operating

guide rod channels as well as the bolt carrier slot alignment

with the upper receiver channels just below them, then seat

the bolt carrier group fully forward. (Fig. h-3)

Replace the ejection panel by inserting the front of the panels

lips to the inside of the receiver ejection window, then pressing

the back of each sides panels until the release tab snaps in

place. (Fig. h-4)

Close the receiver and press the takedown pins into place.

Fig. h-4

Fig. h-3

CONVERSION & REASSEMBLY