I had one in the round butt/3" barrel variety for a time. Interesting extractor system and accurate, but plagued by the same affliction as most all revolvers in 9mm; Fixed Sights!
I really would like to see Ruger's SP-101 with 3" barrel be offered with a decent adjustable sight. That's the only thing that's kept me from buying one this long...
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Make mine lean, mean, and 9x19!