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If you are interested in sighting in your red dot optic to your firearm, then you will need some info before you get started. Sighting in refers to the act of aligning the optic to the line of the barrel. This can be done at particular distances to increase accuracy at specific ranges. As the nature of a bullet in flight is actually more parabolic then just a straight line, sighting in your firearm to a particular distance will ensure that you ar...

Not everyone has the time or the money to go out and buy a brand new AR-15. Even when it comes to building, the process can be tedious when, especially when it's done by someone without the proper experience. If you are buying a new gun or building one, more power to you, but for those who can't do either, buying one that is used is still a very viable option. Here are some things you should consider if you want to buy a used gun.Just like buyin...

The science behind barrel heatIt really is simple to understand why your barrel gets hot. And if you know why, then understanding the cooling methods will be a lot easier as well. When you fire your AR-15 the hammer strikes a firing pin, which in turn stries the percussion cap. The percussion cap then ignites the gunpowder in the casing causing a rapid expansion of gas within the barrel, which propels the projectile forward and out. The AR-15’s...