Geissele rail differences, mk3 vs mk4 vs mk8?

[JG007]

If you only care about mounting things at 12 o'clock on pic rail, wouldn't the mk3 feel best in the hand, then the mk4, then mk8?


Any user feedback?

[Iraqgunz]

I have multiple Geissele rails, to include the MK3, MK4, and MK2. The MK3 is the heaviest of them all as I recall. I prefer the MLOK option and the overall feel of the MK4.