Mounting red dot on side rail?

[mend0k]

Hi, I am thinking of running an offset red dot but instead of having it at a 45 angle I was thinking of placing it on the right side rail.

Anyone tried this out before? Or anyone have any adverse effects from doing this?

[RogueSniper]

Where's your ejection port? Are you planning on holding your firearm "gangsta" style? Your position when viewing your RDS will be affected because you'll no longer be shouldering your rifle.

[Don the savage]

I had 45 red dot on my ar. It worked just like 45 degree lron sights. Shift up make shot. It makes sense if you have a magnified optic on top but it puts you in open in 3 gun