Heckler&Koch MR762A1-LRP User Manual

Page 12

SECTION 7 — DISASSEMBLY & ASSEMBLY

DISASSEMBLY (FIELD STRIPPING) OF THE MR762A1

Tools Needed: MR762A1 Disassembly Tool (located in the Buttstock), 5mm Allen Wrench

1. Clear the MR762A1

a. Point the muzzle in a safe direction with the finger off the trigger and outside the

trigger guard.

b. Place the selector lever on “SAFE”

NOTE: The MR762A1 has ambidextrous selector lever/safety levers, that is safety

levers located on both sides of the lower receiver. Either lever can be manipulated

and moves the lever on the other side. Unlike many AR-style firearms, the selector

lever/safety levers of the MR762A1 can be placed on the “SAFE” position even if the

MR762A1 is not cocked.

c. Remove the magazine (if applicable) by depressing the magazine release button

located on the right hand side of the lower receiver.

d. Depress the catch located on the charging handle and rack the bolt to the rear two

or three times in quick succession to extract and eject any cartridges that may have

been loaded into the barrel.

e. Lock the bolt to the rear by pulling the charging handle all the way back. Once the

bolt reaches its limit of rearward travel, depress the bottom of the bolt catch located

on the left hand side of the lower receiver.

f. Perform a visual inspection of the chamber area to ensure that no live rounds are

present in the MR762A1 prior to disassembly.

g. Return the bolt to battery (all the way forward) by either depressing the grooved

paddle (top portion) of the bolt catch or by slightly pulling back on the charging

handle until the bolt catch disengages from the bolt and then allow the action spring

to move the bolt forward.

CAUTION: Never attempt to disassemble the MR762A1 with the bolt locked back to

rear. After performing the clearance procedure, always ensure the bolt is forward

before attempting to disassemble.

2. Separating the Upper and Lower Receivers:

a. Rotate the recoil pad counter clockwise one quarter turn and separate the recoil pad

from the buttstock. Remove the MR762A1 disassembly tool (Fig. 20, 21). This pertains

to standard model MR762A1 ONLY, not the MR762A1 LRP model. LRP model normally

has the disassembly tool stored in the pistol grip.

Fig. 20 – Removing the disassembly tool Fig. 21 – Disassembly tool

b. Insert the small tip of the disassembly tool into the spring loaded detent located in

the center of the rear takedown pin. Push the disassembly tool from left to right until

the takedown pin reaches its limit of lateral travel (Fig. 22, 23).

Fig. 22 – Takedown Pins Fig. 23 – Takedown Pin Detail

WARNING: Always use the disassembly tool to disengage the detents on both the

rear takedown pin and the front pivot pin. Attempting to remove the pins without

disengaging the detents could lead to damaging the lower receiver. Both the rear

takedown pin and the front pivot pin are captive pins and will therefore remain

attached to the lower receiver. Attempting to completely remove the takedown and

pivot pins could lead to damaging the lower receiver.

3. Bolt Assembly:

a. Remove the upper receiver from the lower receiver (Fig. 24A), depress the catch

on the charging handle and withdraw the bolt assembly from the rear (Fig. 24B).

Continue to pull the charging handle to the rear until resistance is encountered.

Lift up on the charging handle and separate the charging handle from the upper

receiver.

Fig. 24A – Removing the upper receiver Fig. 24B – Removing Bolt & Charging Handle

b. Insert the small tip of the disassembly tool into the right hand side of the firing pin

retaining pin and drift the firing pin retaining pin from right to left until the firing pin

retaining pin reaches its limit of lateral travel (Fig. 25).

WARNING: The firing pin retaining pin is a captive pin and will therefore remain

attached to the bolt carrier. Attempting to completely remove the firing pin retaining

pin could lead to damage of the bolt assembly.