PK90 3,570 Posted October 10, 2018 Ruger has discovered that some Ruger American® Pistols chambered in 9mm may exhibit premature wear of the locking surfaces between the slide and barrel which, if ignored, can result in a crack developing near the ejection port of the slide. AmPistol_Safety-d9d1d77205dcf1dc331ef534ff1c5f6f.pdf Quote Share this post Link to post Share on other sites