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.
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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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