CMMG have announced an .50 Black Powder AR-15 Upper!

To fire, the powder charge and bullet are loaded via a ramrod. Using a standard magazine with a single shot follower, an unloaded 5.56 case is loaded into the mag, inserted in magazine well and loaded just like a standard rifle.

Once the rifle is fired, the empty brass is ejected manually and then reloaded.

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It is a modified .223 case that uses a 209 primer. Currently .50 cal. Should have pricing and other specs tomorrow.