Diamondback Firearms DB15 .300 Blackout Burnt Bronze AR-15 Rifle

A: Lyndon, no worries. The rifle is the exact same. The issue you speak of is two different Company specifications for the same "Cartridge". [The .300 AAC Blackout is a Sporting Arms and Ammunition Manufacturers' Institute (SAAMI) standard cartridge. The .300 Whisper is a Commission Internationale Permanente pour l'Epreuve des Armes a' Feu Portatives (CIP) standard cartridge]. Details are here : https://www.americanrifleman.org/articles/2012/11/5/shades-of-gray-300-whisper-300-aac-blackout/

A: London, yes Sir. The magazine itself is 5.56/223 compatible.

A: Tylor, no Sir. The 300BLK is a 30 Caliber Round with 30 Caliber Barrel. You would need a 5.56 Upper to shoot 5.56/.223.

A: sorry you can not shoot .223 out of a 300 acc barrel/upper you can get a complete .223 upper and install it on your lower to shoot .223

A: Joseph, this rifle comes with a Carbine-Length Gas System Sir. This rifle features a 16" free-float, melonite-coated, chrome moly barrel with an A2 flash hider, and a carbine-length gas system.

A: Hi Joseph. Their website states this particular Gas System is Pistol Length. And as you'll notice. It's much cheaper at Bud's...by a country mile. https://diamondbackfirearms.com/portfolio/db15ccml300b/

A: Joseph, This rifle has a carbine length direct gas impingement system.