harden
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R
Gunsmithing Surface Hardening compound?
I recently worked on the trigger on one of my AR-15s and had my 'smith harden the surfaces of the hammer and sear since I'm pretty sure I broke through the original hardening. He used a product from Brownell's that he bought 30 years ago and that he said is no longer made since California...- rg1911
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- harden surface
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- Forum: The Armory
