INDICATORS ON COLT M16A1 FOR SALE YOU SHOULD KNOW

I was pondering a similar matter.  Minimal amp TIG welding might be The solution to simply welding the roll marks.  What is the perpose of copper?Sure, I'm positive the upper receiver is Colt, combined with the BCG.  It is basically the barrel which is questionable to me.Quoted: A person important issue he emphasizes is that it is not a true Col