
Originally Posted by
markdh720
IG, I have a couple questions regarding your post. My gun runs fine, so this is purely for the OPs help and my information. I'm interested in guns and cars for a similar reason: mechanics. You are a wealth of information, so I'm going to start asking you questions rather than just always reading your posts.
How would somebody check for leakage from the gas system? I have heard how to check the rings many time, but I'm unsure of how to check for leakage from the FSB and gas tube and block.
Usually the leakage will look like a balck-ish-brown rust color. It will usually manifiest itself near the FSB where the tube enters and can also occur around the barrel where the FSB itself is located.
As for checking the gas rings, it is quite simple. You clean the BCG and then re-assemble. Extend the bolt and then stand it on a flat surface (the face of the bolt) will be face down. If the carrier collapses onto the bolt, then your rings are worn and need to be replaced.
Is the idea behind using a heavier buffer to slow down the BCG enough for it to catch the follower which might not be fast enough? If that's the point, would that mean the system is over-gassed assuming the magazines are functioning normally?
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