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My MP9 fires once and then the bolt locks back

locked bolt

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#1 rapatish

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Posted 15 July 2013 - 03:05 PM

My KWA MP9's bolt locks to the rear every time it fires and requires me to release it in order to fire again. What do I need to do to fix it?

#2 gcw360

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Posted 15 July 2013 - 03:28 PM

View Postrapatish, on 15 July 2013 - 03:05 PM, said:

My KWA MP9's bolt locks to the rear every time it fires and requires me to release it in order to fire again. What do I need to do to fix it?
I would check the bolt catch #65 and the bolt catch spring #86.  With the mag out, pull back the bolt with the charging handle and hold it open. Looking into the breech push the bolt catch up from the outside on the left of the receiver.  There is a spring #65 that pushes the bolt catch back down in the absence of an empty mag.  If this isn't happening then my guess is that the bolt catch spring is damaged or disengaged.

Let us know if you have any questions.

See parts diagram: http://www.kwausa.co...cr_s02_kmp9.jpg




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