I agree for the most part. The MK1 should have retained most of it's original design as the "bombproof" model and the MK4 serves as the lightweight model. The MK2 has a place in the lineup as a lower cost alternative but I don't see the need for the MK3 at all. It's basically a MK2 with a slight radius on the sides of the rail. I feel like it's taking up production capacity that could be used to make more MK1 and MK4 rails instead.
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