For sale is often a Federal Arms Corporation of America 9mm threaded P89 barrel. I purchased this a several years ago and mounted it but I do not Consider I ever set one round through it. oil on everyhting else. When I shipped mine to Ruger for maintenance get the https://rugersr45forsale00111.madmouseblog.com/12524577/facts-about-ruger-p89-for-sale-revealed