Ar10 80% build buffer issues

[ar15barrels]

I decide to cut a notch in the buffer tube to allow me to screw it in another revolution. The BCG is now making light contact with the buffer like it should when the rifle is assembled

The buffer detent locates the buffer when the rifle is disassembled.
Screwing the buffer tube in or out has NO effect on the location of the buffer at rest on the detent as you can not move the detent by turning the buffer tube.
Screwing the buffer tube in and out DOES effect how much travel the bolt has behind the bolt stop.
Screwing the buffer tube in too far can also get the buffer tube to crash into the receiver.

If your carrier is short or your buffer tube hole is too far back, swap in a different carrier and see if that fixes it.
Another solution is to face the front of the receiver to move the barrel ad carrier back a bit in the reciever, but then you start fooling with the feedramps and feed geometry which is not a good place to be messing around.

[Ar10bufferblues]

Your right that makes total sense now that i think about it. It must have been making that contact before.

My thinking was that screwing it in a another revolutoin would be the same as putting a quarter inside the tube, move the end of the tube up closer, buffer hits it quicker and BCG can't slam into the lower receiver.

Let me put some pics with the bcg all the way back with the buffer in there and you can tell me if there are more spacing issues.

You guys rock!