A2 carry handle sight
To implement the RIBZ sight setting, you need to allow the elevation drum six more clicks below the 6/3 setting.įor an 8/3 rear sight, found on the A2 drum, you only need three clicks. The beauty of it is that you can still take advantage of a 50-meter setting as well.Īll it takes is adjusting the rear sight drum. The RIBZ sight setting takes the Santose IBZ one step further to achieve a 100-meter setting. Until my frustration at the Appleseed event. I simply set my backup sights to 50 meters and forgot about them. Because of that, I never paid attention to the carry handle IBZ procedure. I was sure I was always going to use flip up sights paired with optics. I did not have a carry handle sight to worry about at the time. Kyle Lamb said the same in his excellent book, Green Eyes Black Rifles, which I purchased while planning my first build. The takeaway was that a 50-meter zero was a good all-around setting for backup iron sights on the AR-15 platform. Unfortunately, the original links in the thread have all expired. Chuck Santose’s improved battlesight zero. In 2010 when I first got into ARs, I read a thread on about Lt. The best accuracy comes from allowing you to use the small aperture at a closer range than 300. However, it’s not ideal for marksmanship practice where precision is the priority, it’s just to large. The large aperture works great for fast-paced run and gun where tight accuracy standards are not required. It provides a lot of context to this article. In that article, I go into depth with how the angles and calculations work for iron sights. In addition to this article, you might want to take a look at my Complete Guide to Your Iron Sight Zero. This gives a usable battlesight zero (BZO) from 0 to 200 meters, hence 0-2. When the unmarked sight is set for 300 meters, the larger aperture works out to about a 200-meter zero. The standard 0-2 aperture is on a different plane than the smaller unmarked sight. The underlying concept here is called the Point Blank Zero. The military intended for all personnel to use the 36m/300m zero and then swap to the larger 0-2 aperture for fighting. Since that is significantly below a 100-meter point of impact (POI), the elevation drum bottoms out well before you can raise the POI high enough. Military practice is zeroing the 6/3 sight for 300 meters. This is the 25/300 variation.This is all explained in great detail by the great Molon in a thread over at Notice how the bullet intersects the line of sight twice: once at 25 meters and again at 350 meters. This chart, courtesy of Molon shows the trajectory of an M855 bullet fired from a 20″ AR-15. It intersects the sight line again around 300 meters. The trajectory of the bullet will continue to rise, and then begin to fall. This works since the intersection of the sight line and bullet trajectory at 36 meters is below the bullet’s maximum ordinate. That also happens to correspond to around 36 meters. You’re supposed to zero the 6/3 carry handle at 300 meters. The RIBZ sight setting, short for Revised Improved Battlesight Zero, helps with that. You could either zero it at 25 as intended, and use the elevation markings, or set it for 100 meters and not use the elevation wheel. The 6/3 sight was never designed to easily accommodate both settings. You see, I was accustomed to practicing iron sight shooting at 100 meters and the Appleseed event took place at 25 meters. It wasn’t anything Appleseed did, but more the settings of the standard 6/3 carry handle sight I was using at the time. When I attended an Appleseed shoot back in 2014, I was frustrated with the whole zeroing process. Click here to learn more about what that means. FLIR RS-32 2.This post contains affiliate links.Armasight Vulcan MG 3.5x night vision scope.
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