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Group 3 Backplate with recoil spring
The backplate with recoil spring closes the receiver to the rear. The
backplate is retained in the receiver by a lug and a locking pin which also
holds the pistol grip.
The recoil spring guide rod with the recoil spring is rigidly locked to the
backplate. Rearward movement of the bolt assembly is stopped by a
buffer. A knob at the rear of the backplate simplifies its assembly.
Fig. 13: Backplate with recoil spring.
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Stripping into assembly groups
¾ Unhook the carrying sling at both ends.
¾ Unfold the buttstock.
¾ Detach both locking pins on the grip and insert them into the
support holes on the butt stock.
¾ Remove the grip downward.
¾ Fold the buttstock.
¾ Remove the backplate and the recoil spring to the rear. (Fig. 37)
¾ Pull the cocking lever to the rear and detach the bolt (Fig. 38)
¾ Pull out the locking pin at the handguard and detach the handguard
to the front.
¾ Push the magazine catch, swivel the magazine well to the bottom
and detach.
Fig. 37: Remove backplate
Fig. 38: Remove bolt assembly
Disassembly of the push rod and the gas piston
¾ Push the push rod against spring pressure to the rear and remove it
from the gas piston.
¾ Swivel the push rod aside and detach it to the front.
¾ Remove the gas piston to the rear.
Assembly of the push rod and the gas piston
¾ Insert the gas piston into the gas block.
¾ Introduce the push rod into the front part of the receiver, push it
against the spring pressure into the receiver and let it slide into the
gas piston.