i have 5 original factory 30rd ruger blue steel mags. the floor plates are blued steel and are just marked with the eagle and sturm ruger and co. ive got 2 more that are original factory ruger that are 30rd and are not marked at all. they came in the original old style ruger white box marked 30rd. i called ruger and asked them about it as i thought i was getting ripped off and they ( ruger) told me that there WERE some of the 30rd originals that were LE mags that DID NOT have any markings on them. i found this kind of strange myself, but they are identical to the marked ones i have, just no markings.