monkeyman1984 Posted November 23, 2014 Report Share Posted November 23, 2014 Hi everyone can someone please tell me the reason that my WE M9 fires of full auto when it is only ment to fire on semi what parts do i need to change? Thanks in advance. Link to post Share on other sites
garry Posted November 23, 2014 Report Share Posted November 23, 2014 Always hard to tell without looking, but sounds like a worn sear buddy. Link to post Share on other sites
vilerk Posted November 24, 2014 Report Share Posted November 24, 2014 Been a while since I've owned one, but either the trigger bar is worn down, or the BBU frame ( the sheet metal part) is worn. The trigger bar isn't getting pressed down enough or fast enough to disengage the sear. You could try shimming the BBU so that it sits lower, or filing the trigger bar so it disengages earlier. Link to post Share on other sites
garry Posted November 24, 2014 Report Share Posted November 24, 2014 Yeh, That's possible. The bbu may not be fully pressing the hammer fully against the sear so it catches. However, a worn sear is more likely generally. Depends also on the number of rounds fired so far as well. The bbu normally takes longer to wear than the hammer / sear interface. Link to post Share on other sites
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