DescriptionMitch Barrie - flickr - Three rimfire pistols.png
English: Ruger Mk I at top; Ruger Mk II; Ruger Mk IV Hunter.
This photo allows you to see the evolution of the design. I don't shoot the Mk I much because the bolt doesn't lock back on an empty magazine, so you have to use a chamber flag for range safety. The Mk II has an amazing trigger because of some work I did to it long ago (I forget exactly what), so that's another reason it's preferred.
The heft of the Mk IV Hunter due to its bull barrel makes it fun to shoot, but some people get a little fatigued from holding it up.
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