A/C compressor makes noise

New as in new old stock or new aftermarket rebuild? If aftermarket I’ve never seen them replace rods and pistons a lot of the parts internally just cleaned and reused parts scavenged from other cores. I have rebuilt two new using old stock pistons I bought off eBay that came with the rods. Those two are perfectly quiet whereas ones that I’ve gotten from O’Reilly‘s or other places always have a rattle in them as I think the Rod is worn on the crankshaft with a little too much play because they are reused.