BUIS

KChen986

New member
I use the ARMS #40 L. I like it alot because it only takes a quick flip to 'deploy' the sight, and my ACOG fits well 'over' it.

However, I've heard complaints about the spring 'tiring out' in a hard use weapon, or, becoming jammed with mud and not fully springing up.

I've also heard good things about Troy Flip sights.
 
I've had the ARMS #40A and the Troy. I like the Troy better (lower profile, generally better construction). The ARMS will certainly get it done though and I like the #40L in general, although the ARMS is prone to losing its locknut if you don't use blue loctite on the threads.
 

Sixer

New member
I've been very happy with my front and rear YHM flip up BUIS. Great quality at a reasonable price.
 

ForneyRider

New member
My YHM works pretty well. They were compromise between expensive Troy and cheaper GG&G sights.

I've yanked them off and one numerous times and the coating doesn't scratch. They are easy to adjust with the DPMS M2 tool.
 

Icopy1

New member
+1 for Matech. It's standard issue and can be purchased for under $60 shipped if you search the forums.
 
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