Owner's Manual

24 25

a) Conversion Kit Removal

CALIBER CONVERSION / DISASSEMBLY / REASSEMBLY

Ensure the rifle is safe by following the Unloading/Clearing

procedures on page 23.

Follow steps a-h (pages 24-33) for caliber conversion process.

Slide the handguard off the front of the MDR. (Fig. a-1)

Lock the charging handle to the rear of the charging channel.

Using the 5mm hex side of the multi-tool, loosen the two

barrel retention screws one full turn each and rotate the

barrel locking screw to the “Unlock” position. (Fig. a-2)

Fig. a-1

Using the T25 side of the multi-tool, loosen the handguard

retention screws. Press the captured handguard retention pin

through from the right side to the left side of the MDR receiver

until it snaps into position. (Fig. a-1)

Remove the barrel assembly. (Fig. a-3)

Slowly release the charging handle, allowing the bolt assembly

to go to the forward-most position.

Place the MDR on its right side. Use any instrument that has

a small, strong edge to it, (such as the open end of a spent

cartridge) press the ejection release tab forward and up to

remove the ejection panel. (Fig. a-4)

Press the captured rear and middle takedown pins out from

the right to the left and tilt the rear of the upper receiver up.

(Fig. a-5)

Pull down and rearward on the charging handle to bring the

bolt carrier assembly rearward, then grasp the bolt carrier

guide plate and pull the recoil spring support rearward and out

of the rifle.

Fig. a-5

Fig. a-4

Fig. a-3

Fig. a-2

CONVERSION & DISASSEMBLY