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Two Types of Iron Sights for Better Accuracy The case of having optics installed in your firearm can actually provide you with various benefits such as extended range, low-light visibility and get ease of target acquisition. Even the military today now switched to optics to use for combat situations. It is really important to remember that such high tech replacements for dependable old iron sights can be disabled on a certain way. If there’s no proper backup, damaged optics could make the weapon useless for an accurate shooting. The BUIS or Back Up Iron Sights could provide critical redundancy when it comes to setting your AR. This may add some weight, but this can give you the ability to get targets even when the primary sight goes down. What you will learn furthermore in this article are some things to consider in your selection of a backup iron sight.
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Iron sights are available in various configurations based with the height of the sights. The basic to this is that you should have the rear and front sight to have the same height if you want to really hit the target.
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Where this comes into important is to where you mount the front sight. Most of these backup iron sights are actually available in 2 options to which would be the gas block height and also the same-plane height. In a gas block BUIS configuration, the front sight post is about 1/4 ” higher than the rear sight aperture so that it could make up for the case to where the front sight is mounted 1/4 ” lower than its upper receiver where the rear sight is mounted. It’s essential to remember that the gas block sights are only for the purpose of mounting on a gas block that’s usually lower than the upper receiver. Some of the gas blocks have the same height with that of the receiver to where you want the same-plane sight is. Same-plane sights are actually made in order for the front sight post would be with the same height as the rear aperture if the sights are put on a flat surface. This actually means that for these sights, the front sight should be mounted somewhere with the same height as its upper receiver. Usually, people will mount the front sight on a free float handguard with the rail on top. Your overall AR-15 setup will be the one to help you determine if you need the folding or fixed BUIS. The fixed iron sights comes with the advantage of having no moving parts, which actually makes this nearly indestructible. Another thing is that it is always ready and there’s no need to mess with them. If you are ever not using them as your main targeting system, you should consider using the fixed sights, but for backup purposes, the folding types are the ones that’s best.