CLOSED -Sig P320 80% Build Kit Group Buy -CLOSED

[BrassCase]

I would suggest that you disassemble the FCU and then reassemble slowly watching the video. At that point if it still isn't working you can check that off the list as a possible issue and move on. Things like this usually turn out to be something really simple that was just overlooked.

[mikeinla]

I would suggest that you disassemble the FCU and then reassemble slowly watching the video. At that point if it still isn't working you can check that off the list as a possible issue and move on. Things like this usually turn out to be something really simple that was just overlooked.

Already done that 4 times

[19K]

Already done that 4 times

what does it do when you move it by hand?

[jctheguy]

http://80percenter.com/jsd-supply-p3...ert-completion

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[mikeinla]

"After filing it is important to make sure that the safety lever depressed completely as shown in the image* below. If it doesn’t see where it is hitting and file more."

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It does not go that far down
It is not hitting the bottom
Nothing left to file

[Hitman2002]

It does not go that far down
It is not hitting the bottom
Nothing left to file

I notice a small cutout here that I do not see on yours. Is it hitting here?

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[turtlespeed]

I had a similar issue with the safety not going down enough also. What I noticed was when tightening the jig down, it caused the sides of the FCU to bend inward a bit causing all the parts to sit more snugly on top of each other. Bending the sides outward a bit allowed the safety to drop lower and I was able to rack the slide with ease.
Hope this helps. Good luck.

[docflash]

It does not go that far down
It is not hitting the bottom
Nothing left to file

The part marked with red near your thumb is the disconnector. With all of the parts removed from the housing, the disconnector should move to its upper and lower limits freely. Is this true in your case?

If it doesn't move freely with all parts removed then what is restricting it? If it moves freely with all the parts out but doesn't when they are installed then what part is it hitting?

I know the above seems obvious, but I'm just thinking how to troubleshoot it.