Heckler&Koch MR762A1-LRP User Manual

Page 21

4. Apply a light coat of lubricant to the exterior of the bolt carrier, outside of the firing

pin retaining pin, cam pin, and bolt head. Pay special attention to cam pin area inner

and outer surfaces of bolt carrier, anvil, and bolt head’s locking lug.

5. Apply a medium coat of lubricant to the interior and exterior surfaces of the charging

handle (Fig. 58).

Fig. 58 – Lubrication of MR762A1 Charging Handle

LOWER RECEIvER ASSEMBLY

1. Apply a light coat of lubricant to the exterior of the receiver and receiver extension

(buffer tube), interior of the exterior metallic surfaces, exposed pins, and magazine

springs.

2. Apply a medium coat of lubricant to takedown pins, pivot pins, detents, inside the

buffer extension tube, buffer detent pin, springs inside the lower receiver, trigger

mechanism, hammer, disconnector, and sear inside the lower receiver.

3. Apply a medium coat of lubricant on the (recoil) action spring, buffer.

Fig. 59 – Lubrication of MR762A1 Lower Receiver Assembly

Fig. 60 – MR762A1 Buttstock Assembly

Fig. 61 – MR762A1 Lubricant Guide

LUBRICATION SUMMARY
NO Lubrication: (surface is dry and not slippery to the touch)

• Plastic or rubber components

• Sling webbing

• Optics

LUBRICATION
• Gas Piston and Gas Cylinder,

• Buffer and recoil spring

• Bolt, Bolt carrier, Cam pin and Firing Pin Safety

• Extractor

• Ejector

• Barrel extension

• Bore, chamber, locking surfaces of the chamber and bolt lugs

• Receiver take down and pivot pin

• Hammer, trigger, disconnector springs and selector lever in trigger group

• Piston rod

• All metal parts and/or any area where metal contacts metal.

Magazine Cleaning
There are no special requirements, cleaners, or lubricants for cleaning MR762A1

magazines. The standard cleaning equipment that is used for the rifle may be used for

these magazines. Refer to the care and cleaning section of this operator’s manual for more

detailed information. Do not use metal bristle (brass or steel) or wire brushes to clean the

magazine components as scratches or other damage may occur to the protective qualities

of the surface finish.