What? Total nonsense. This my 550 dollar smith and wesson 5.7, as I said it has a harder finish not the cerkote type that is like hard paint so doesn’t chip. The 5.7 has a stronger than normal extraction energy, it is a crazy round.
It is the same on many of my firearms. The only ones are the weak Glock extractors, I have shells landing on my hat on my arm in the summer had one go down the back of my shirt.
Are you new to firearms? Not sure why you are so rude to be honest. Let us see the firearm you own.
This may help. I don’t know how much your new Rock 5.7 was when you bought it, but if it was in the last 30 days, and the price is now lower: PSA will refund you the difference between what you paid and the sale price. I bought a .22 pistol a few months ago, then saw it on sale, one phone call and they instantly refunded the difference back to my card.