I have an older Bushmaster rifle with a removable carry handle. Will the thermal imaging or night vision scope look around the front sight post with no problems. I know a normal scope does on anything over 3 power. I don't even know the front sight post is there when magnified

What advantage will this give over a regular scope?

Let me explain why I ask that....

If critter is too far out to identify its body with a light and regular scope, as in just seeing eyes, do these scopes allow you to identify what the critter is?

When it's so dark you can't see anything with your naked eye, you can see like daytime with a slight green tint with good night vision. I have taken my goggles to an outside party at night and let people look through them and after the first few rant and rave about how amazing it is a line forms for everyone to get a turn. It is truly amazing. On a night with a lot of stars when you look at the sky with night vision you can see about a thousand times more stars because it makes all the one visable that you can't see with your naked eye.

Monocular work okay. It takes a little time for your brain to adjust. I like the duals, since quads are around 20K. What I like about Monoculars is you can take them off your helmet and carry them with you, in your car, on trips etc.. really good for that.