Battle Arms Development BAD-EBCG-M16, Enhanced Bolt Carrier Group, Black Finish BAD-EBCG-M16 Established in 2009" Battle Arms Development" Inc. (B.A.D. Inc.) stands as a distinguished force in the realm of small arms innovation. Nestled in the heart of Henderson" Nevada" their company is driven by a relentless commitment to pushing the boundaries of small arms design and manufacturing.