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26
UMP SUBMACHINE GUN
Disassembly of the Bolt
• Push and hold firing pin forward.
• Pull out firing pin retaining pin to the left (Fig. 28).
• Remove firing pin and firing pin spring to the rear. To do this, push
locking catch to the right (Fig. 29). With your thumb prevent the firing
pin with firing pin spring from springing out.
Fig. 28 Fig. 29
Pull out firing pin retaining pin Push locking catch to the right
WARNING: Never disassemble the firing pin. It is possible to
assemble the firing pin assembly incorrectly and in doing so,
disabling the UMP firing pin safety. Please contact HK for more
information.
Assembly of the Bolt
• Place firing pin spring onto firing pin.
• Insert firing pin spring and firing pin into the bolt from the rear and
push them forwards (Fig. 30).
• Using any pointed object push firing pin forwards (Fig. 31).
• Insert firing pin retaining pin from the left to retain firing pin in the bolt.
Fig. 30 Fig. 31
Insert firing pin spring Push firing pin forwards
and firing pin
locking
catch