In the realm of AR tinkering, there are two calibers that get most of the press time. These are .223 and 5.56, far and away.Past them, a few

The 6.5 Grendel is a stubby little thing that, when not properly juxtaposed, looks smaller than the 5.56, everyman’s favorite AR cartridge.B

Unless you’re already deeply familiar with sporting arms, or perhaps have served in the military, if you saw an AR-15 and an AR-10 side by s

It is probable that most people’s home builds are built around 5.56, .223 or around a hybrid like .223 Wylde that can shoot both. The former

When you start building an AR-style rifle at home, whether you intend to use it for defensive applications, for hunting, for competition, or