I'm assuming that it's an AK finished TRP
If so, I would not waste my time nor money having the same stuff put back on. I'd recommend hardchrome by Metaloy. Best hardchromer in the business.
Hardchrome is some tuff stuff too.
Gen 3: G19,G20,G23,G26,G27,G29,G30,G32*,.50GI
Gen 2: G19
Gen 4: G17,G22
Gen 1: G17
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