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UMP SUBMACHINE GUN
Reassembly of the UMP
• Fold buttstock.
• Insert the bolt and recoil spring assembly to the receiver from the rear.
• Unfold buttstock.
• From below, engage lower receiver (hammer between cocked and
released positions) into the support bolts on the upper receiver and
swivel it upwards (Fig. 32).
• Insert locking pin into the upper receiver to secure lower receiver.
• Put the UMP on (Safe).
• Insert empty magazine.
• Carry out a function check as described on page 30 (cock, check bolt
catch function, set safety/selector lever on “Fire”, pull trigger, set
safety/selector lever to “Safe”).
• Attach carrying sling (Fig. 33).
Fig. 32 Fig. 33
Engage lower receiver Attaching carrying sling
support bolts