Heckler & Koch MSG 90 Binoculars User Manual


 
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Put the weapon at safe!
Remove the magazine.
Unload the weapon. Pull back cocking lever, make sure that the chamber
is empty, and let cocking lever snap forward again.
Remove both retaining pins from the back plate and slide off the butt
stock
Fig. 30: Removing the butt stock
Remove pistol grip retaining pin and take off pistol grip.
Pull back bolt assembly by means of the cocking lever and take it out of
the receiver
Fig. 31: Removing the bolt assembly
To take off the hand guard use a screwdriver and press the bolt back as
for as it will go, and then turn the bolt by 90 degrees. Finally draw the
hand guard off the barrel over the muzzle.
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The butt stock with back plate encloses the receiver at the rear end. It is
joined to the receiver by two locking pins. The back plate carries the
recoil spring guide rod with the recoil spring, the buffer device and the
butt stock.
Mounted on the comb of the butt stock is the cheekpiece, which can be
adjusted for elevation. The butt plate at the rear end of the stock is
length-wise adjustable.
Fig. 8: Butt stock
Group 5: Hand guard
The removable hand guard encloses the barrel from below. It is secured to
the receiver by rotating the bolt through 90 degrees.
Fig. 9: Hand guard