Iron sight for ar-15 any suggestions?

[Darkshaolin]

I am getting an ar-15 soon and need and iron sight for it. I'm planning on getting an eotech later on but need something cheaper and reliable for now.
Any suggestions?

 

[USP]

Troy

 

[Claven2]

Is it really BUIS, or will it be for regular use? If it's a not-often used BUIS, maybe look at something like the Magpul BUIS. It's light, sits low and isn't very expensive.

 

[AdamO]

+1 on the Magpul BUIS. If you want to spend a bit more, I have the Midwest Industries sights, and have no complaints.