I had room on my Bushmaster to mount a 512 and a buis by allowing the 512 to extend over the railed handguard a little. Since the buttons on mine are on the back of the model it was the only way to leave enough finger room, about two slots, to run the unit. With the 516 you shouldn't have an issue, but you'll probably have to pick between a buis and a magnifier. I wouldn't let more than 1/4 of the EOTech extend beyond the receiver but that's just my opinion. FWIW Brownells carries a nice replacement mounting screw that has nice large head and a slot for easy removal/installation.

 

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Do u have a side shot of that? Lol

 

I do now.....

 

Awesome man thank you. Do u have 1/4 co-witness? Or do u have to remove the eotech

 

Works just fine as is.