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3 thoughts on “1966 Colt XM16E1 Reweld”

  1. It started off pulling my heartstrings. I think I climaxed a little bit too, yep I’m pretty sure of it. I have tears of joy. Thank you for posting this.

  2. Um…. yea, about that.

    Welding on 7075 aluminum seems like it went well… until you put some real stress on it. Then you start to learn about “phase segregation” and micro-cracking as a result – much like the precipitation hardening zones on either side of a weld in cast iron.

    This is why welding companies do not supply an aluminum filler metal for 7075.


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