A brief update. I ended up purchasing another RDS directly from MAKO a few months ago. It appeared to be identical to the earlier model with a couple exceptions. The on/off/brightness knob is now some type of polymer material and no longer metal. The dot intensity on the highest setting was very slightly dimmer.



I experienced similar mounting issues with this RDS, in that there was slight front to back movement on the upper when mounted on two different Colt rifles, despite the adjustment nuts being tightened. I continued test-fitting and found that it was a decent match for a Stag upper that was on hand. Off with the old Aimpoint C3 in an ARMS 17 mount and the RDS installed with no movement. At the range I removed and reinstalled it a few times and observed no POI shift.



MAKO fails to respond to email inquires about the mount issues, which is less than impressive, especially when trying to bring a new product to an established market.