This post provides nothing new. But, I would really like to keep this thread alive and possibly learn something.
This weekend I took the Frontsight Practical Rifle, Two day skill builder. I have taken this class twice before: once with an Aimpoint ML2 and once with a TA31F ACOG. This time, I took the class using only my Troy duel aperature BUIS.
This was two days, somewhere around 700 rounds, 7-200 yards, with VERY tight time constraints. Times range from 1.5 second head shots at 15 yards out to 6.5 second COM shots at 200 yards.
Bottom line: I did horrible. By FAR the worst I have ever done in any class or competitive venue.
I used the large aperature all the time. This was the advice of the instructor. I did fire a couple groups with each aperature and it seemed like they both were not on the same plane. This could have just been how bad I was shooting, but at this point, I don't know. If they were both on the same plane, I think I would have done better with the smaller aperature, but I don't know since I didn't try it.
I think that one of my major problems was that I wasn't getting a consistant cheek weld. I blame this on my use of optics for years. With a dot optic, cheek weld doesn't matter. With iron sights it is critical. I think that if I took the same class again, starting tomorrow, I would do OK. But, this kind of shooting with iron sights takes some serious training: and I don't have it.
I can't say that I have much against the Troy sight. It basically just sat there. I don't know if any other sight would have allowed me to perform better but I seriously doubt it.
The guy shooting next to me had a GG&G MAD BUIS on his gun. I liked the look of it. I think I might give it a try.
Accoring to this website:
http://www.cactustactical.com/ggg/ar15accessories.html "It has now been improved to include a locking detent mechanism. Once deployed in the up position, the sight cannot be folded down without depressing the spring assisted detent release button located on the left side of the sight base. This eliminates the possibility of accidentally lowering the sight."
One thing about the Troy BUIS that I consider a huge disadvantage is that I was unable to adjust the windage on mine with a bullet (I knew this before the class). I used a pen both times I adjusted mine. This is unacceptable to me. The sights should adjust with whatever you have on your person when you are firing the rifle: not a special tool. This usually means a bullet.