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What material is currently used in the recievers on the 336, 8620 or 4140 ? I'm wanting to color-caseharden my pre-safety 336 and I don't want to grind on it to find out what it is. If it's 8620 is the trigger-plate (lower-tang) the same? I'd like to know, I'm thinking of making some straight-grip lower-tangs and I want to make them from the same material. THANKS!
 

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What metallurgist on here would know the answer to this question?
 

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If I recall............the carbon steel receiver forgings and TGP forgings are AISI 1115 or AISI 1117..........

Tom
 
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