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Person shooting a semi-automatic AR-15 assault weapon rifle at an outdoor gun range

Ammunition

Throwback Thursday: Shooting Steel-Cased Ammo In Your AR-15

Have you ever read or been told that shooting steel-cased ammo out of your AR-15 is not good? Older, steel-cased ammo like Brown Bear is lacquer-coated and may cause issues down the road. However, there is nothing wrong with shooting steel-cased ammo from your AR. In this article, Cheaper Than Dirt debunks the myth that shooting steel-cased ammo is bad. After reading “Shooting Steel Cased Ammo in Your AR-15,” you will be saving money shooting cheap ammo without developing problems in your rifle.

.223 vs 5.56

Ammunition

.223 vs. 5.56: Ammunition Comparison and Overview

Using commercial .223 cartridges in a 5.56-chambered rifle should work reliably, but generally will not be as accurate as when fired from a .223-chambered gun due to the excessive leade. There always seems to be a lot of confusion over the difference between a .223 and a 5.56 chamber. I often receive questions asking if someone can shove 5.56 ammo into their new AR-15. The quick answer is maybe. Just because a gun has .223/5.56 scribed on the barrel, does not mean it can handle either piece of ammunition equally.

ATI Omni

AR-15s

Is the Polymer Lower a Good Idea?

Traditionally, much of the AR is already plastic. However, recent developments are pushing the limits of the AR design, and the polymer lower receiver is now commonplace.