AimPoint Turret Modification

This is a quick part to print/mill to fit on the yardage turret of an Aim-point with a 4 dollar thrust bearing, out through the dust cap to allow for an external knob. The idea here it that I can mark yardage on the turret for 3-gun matches. I'm partial to fine diamond knurling, so that's the knob I installed. The clicks on the Aim-Points are so good, this assembly works very well. You just drill out the top of the dust cap Buy this bearing: https://www.mcmaster.com/6655k32 Print this part (I printed it out of Ti at i.materialize) And stick on the knob of your choice More on this here: https://brainlubeonline.com/EverythingAR/RandD/AimPoint/turret.html