I'm not sure on those, the revolvers are normaly listed as high and low. I'd say make some measurments at different points until you fined one that matches the options listed and then you can go from there with it.
I won't be wronged. I won't be insulted. I won't be laid a-hand on. I don't do these things to other people, and I require the same from them. John Wayne-The Shootist
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