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Adamlxlx · June 26th, 2011, 10:13

Hey guys,

So I am putting together an m4 scratch build. I have got the mechbox together no problems but am having a problem selecting full auto. I think I know what it may be but I need more input.
Basically the gun shoots semi no problem. When I put the selector to auto the trigger is locked like it is on safe. The mechbox is sans a safety unit at the moment so I know it is not that. My selector plate moves fine, no binding. I am not missing the little spring either.
Honestly I think it is a shitty mechbox. The bushing that the yaw adjustment bar goes over sticks up a bit due to a shitty cast. They are 8mm bushings and the one for the sector gear sticks out a little on the inside. Could the arm be binding on this non flush bushing causing my full auto to lock and not work?

Thanks in advance.

June 26th, 2011, 10:13	#1
Adamlxlx Trader rating Join Date: Sep 2007 Location: Guelph	Full auto not working. Hey guys, So I am putting together an m4 scratch build. I have got the mechbox together no problems but am having a problem selecting full auto. I think I know what it may be but I need more input. Basically the gun shoots semi no problem. When I put the selector to auto the trigger is locked like it is on safe. The mechbox is sans a safety unit at the moment so I know it is not that. My selector plate moves fine, no binding. I am not missing the little spring either. Honestly I think it is a shitty mechbox. The bushing that the yaw adjustment bar goes over sticks up a bit due to a shitty cast. They are 8mm bushings and the one for the sector gear sticks out a little on the inside. Could the arm be binding on this non flush bushing causing my full auto to lock and not work? Thanks in advance.