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Old November 25, 2009, 07:34 AM   #4
Bartholomew Roberts
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Join Date: June 12, 2000
Location: Texas and Oklahoma area
Posts: 5,719
My understanding is the same as Rocky Mountain Tacticals - because the extrusion process is cheaper than forging, it was used to produce commercial stocks and the stocks ended up being slightly larger in diameter - either because it was necessary to give it the same strength or because of the process.

Perhaps someone who is more familiar with those processes can explain it better to us?
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