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03-21-2014, 01:45 AM
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Twice a Lifer
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I believe the parts were heat treated to harden them up to one degree or another. I have a copy of Mauser(?) factory alloy and hardness specs, by individual part, that another member posted during my query about the alloy and hardness of extractors. The feed ramp wouldn't be any harder than the rest of the barrel extension, though.
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