Botach put out an email this morning that they have the MS1 without swivels on sale for $20. I was gonna buy a couple, one black and one green (I have green furniture on my 300BO to visually differentiate), but when I logged in my most recent order popped up.
Apparently I have a couple of these that need installed on the rifles, one black and one green, that have been around here someplace since March...