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Sig Pe57 (510-4) Parts Kit Analysis

A functional 510-4 can go for 6k plus so it’s definitely worth considering. My biggest concern is that the receiver was already de-milled repaired/welded then de-milled again.  The initial repairs to the receiver look pretty robust so I’m not sure how close we can make it look with these big repaired sections.  We would want it to look like a …