Quote Originally Posted by dukalmighty View Post
On the rear sight the 2 different apertures are meant for different ranges,big hole is meant for 0 -200 yds and small hole is meant for 200 -500 IIRC
We qualed with everything using the smaller aperature. The larger one was for shooting in low light/night or with a gas mask.

OP, I'd stick with the longer sight radius and keep the rear sight to the rear of the weapon, that is how it is designed to be used, and how it will work best.