Had a customer with an EAA Witness Silver Team in 9X21 he has had for 15yrs. The slide cracked through on the thin part under the ejection port on the slide.
EAA warranty says to original owner, he had me send it in for him because as a FFL dealer I could mail it for less money than UPS or Fed Ex overnight required shipment.
EAA replace the slide, barrel and comp. If they will do it for a 15yr old gun I would expect they would do it for a gun bought this last summer.
On small parts I have just ordered the parts because the parts cost less than the shipping and they always want the entire gun sent back for warranty service.