Originally Posted by
ucrt
=========================
MarkM,
That's my understanding.
A quality AR maker's rep told me this past Wednesday, that the slower the BCG moves the better, (Which is still going to be pretty fast) and the Buffer controls the speed. He said a heavy spring has no place in a functioning gun, especially a factory "tuned" one.
He told me they got a gun back last month under warranty that the guy claimed wasn't reliable. Once the gun is in the shop, they see a heavier spring was installed. They call and confront the guy and he says, "It is a "better" spring than the one that was in the gun!" They asked him if the gun worked with the original spring and tells them, "Yes, it worked fine but this is a better spring!". Oh well...
I couldn't do that job. I'd have to say, "Well then go ahead and use the "better" spring but just get used to your gun failing...stupid!"
.