I guess my question is why in the world would a gun company put a gold in color buffer soft aluminum in a new gun? I shot 126 rounds and it chewed up the edge about a 1/4" in diameter and pretty deep too, I see some buffers have an H stamped in the middle what is a good one to buy for a semi auto? and the buffer spring is black should I change that as well? thanks and look forward to your guy's advice.