aac honey badger
The AAC Honey Badger is an AR-15–based compact assault rifle, frequently used in a suppressed. Chambered in proprietary .300 AAC Blackout cartridge, it was originally produced by Advanced Armament Corporation.
Both the gun and the cartridge used were developed in close co-operation with US Special Operations units to create an effective replacement for the MP5 and similar close quarters combat weapon systems.