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Message: <blockquote data-quote="KurtM" data-source="post: 4068991" data-attributes="member: 6064"><p>I think that this statement is true on many levels. The quality of an AR is in the machining, not the forging or casting. There are only a few Foundries that make ALL the basic AR components. All these companies buy their components from them. For instance Alcoa and Colt's were closely aligned the early days, but Alcoa upper and lower raw forging were sold to Olympic, the fledgling DPMS, and Bushmaster. People would say Colt is so much better, they use better material in their upper/lower than these other guys! Same parts! You would be very surprised at the amount of parts almost all AR manufacturers use that are sourced from just 3-4 large manufacturers. I know everyone throws around Mil. Spec. as if it is the holy grail, but it isn't all that great. All it says is we magnetic particle inspected the parts for cracks and spot tested hardness on a select few parts, and the dimensions fall in the specified range. Yes, it's good stuff to test, but it doesn't prevent bad parts from occuring. I.E. Colts had a bad batch of extensions and they liked to shear off the locking lugs. They were WAY to brittle from heat treating gone wrong, but each and everyone met the hardness test by "Mill Spec" . One Larger builder who MPIed all their bolts which they got from Martin, a government" mil spec" contractor had a bunch of bolt failures do the a bad batch of steel that somehow passed inspection.... Twice!  So don't buy a name just because.</p></blockquote><p></p>

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