There are almost as many kinds of ammo as there are guns in the world! When it comes to 5.56, you'll see names like "milspec", "XM193", "M855", "XM855" and lots more. Don't worry, we'll take the mystery out of them!

Bolt Carrier Groups are a core and complex part of the AR-15, choosing the right one for your needs is paramount to a rifle that runs reliably and does exactly what you need. Learn all about them and what is best for you!

Looking for a woman-friendly handgun? Our team at Firearm Review has you covered. You won't find any pink guns here--just tried and true favorites our female teammates love. Check out our top picks!