Mounting red dot

[mmcintyre1220]

I am looking at buying one of the bushnell acog style red dots to put on my nork
Ar. Does anyone know if i will need a riser for it or not ? If so what size?

Thanks

 

[Timbertec]

You shouldn't need a riser.... If you have the front post though... that may be another story... 1/2"