If you painted it, then I can assume you had to remove the rear block?
I noticed that if I do not torque the bolts evenly, the gun will not fire at all.
Seems that if the SLIGHTEST amount of uneven threading, and the bolt will bind against the breech, and not move at all when the trigger is pulled.
Actually took me a very long time to figure that out! Other things I discovered was if bits of the trigger system fall out, or out of alignment.... same thing.
SO, those are my 2 guesses.
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