I posted this a month ago and will post it here. I wish I had bought this years ago. It works!!!
Under 3 minutes.
That's all it took to bore sight my EOTech 512 and back up iron sights (BUIS) on my new toy.
I didn't want to wait any longer for the other parts I ordered so I set up my shooting rest and target for 50 yards.
Now starting the time I took my Cabela's Universal Laser Bore Sight and put the right adapter in and put it in my new rifle placing it on the rest. I popped up the BUIS and looked at them though the EOTech like it wasn't there. A couple turns and I was on target. I then flipped them down and turned on the EOTech and was off just a few turns to the right. I took the Laser Sight out and put in a magzaine and fired one shot at the target hitting just off center at 50 yards. I turned the EOTech off and popped up the BUIS, fired another round and was 1/4 inch low at 50 yards.
All of that in under 3 minutes before it got too dark.
I wish I could have fired off a whole mag but too many neighbors too close, a couple rounds is about all we can do without drawing attention. I'm going to take it up to the farm and really get going.