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A small threaded pin fell out of the maxwell of my Vector MP5/40. In the provided pic you can see it sitting on the lower. I know the 9mm platform and the pin does not look familiar. That led me to believe it is a part of the bold hold open. It appears to thread into the empty hole in the forward part of the assembly. I wasn't about to force anything until I knew for sure where it goes.
Secondly, how exactly does the BHO work? Mine does hold open when the mag is inserted but the bolt goes home when the mag is removed. The weapon behaved like this before the pin fell out.
Any help would be appreciated.


Secondly, how exactly does the BHO work? Mine does hold open when the mag is inserted but the bolt goes home when the mag is removed. The weapon behaved like this before the pin fell out.
Any help would be appreciated.

