Hi. I just picked up an old B3-1 at a yard sale. Was majorly dirty and dusty but did work. Took it apart to clean and lube it and a pin fell out of the trigger assembly. I’ve tried putting everything back in but it seems like the sear is not engaging on the piston. Any help would be appreciated. Pictures attached for reference 
Help with B3-1 Trigger
- Thread starter agildawg
- Start date
I am not familiar with this exact trigger however a lot of triggers need a
‘ghost pin’ (short version of the actual pin to allow it in the housing) to preload the spring before putting in the housing and installing the actual pin. This lack of sear engagement happens when the trigger and sear is not preloaded with the spring when inserted in the housing.
However with this one it appears that the spring on the trigger needs to wrap up and around the top of the sear before installing.
‘ghost pin’ (short version of the actual pin to allow it in the housing) to preload the spring before putting in the housing and installing the actual pin. This lack of sear engagement happens when the trigger and sear is not preloaded with the spring when inserted in the housing.
However with this one it appears that the spring on the trigger needs to wrap up and around the top of the sear before installing.
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Did you pull the trigger after putting everything back together? It's a different gun but in this video he says if you don't pull the trigger after install the gun won't c0ck. It's right at 12:10 into the video.
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