Battle Arms Development Enhanced Pin Set Kit, For AR Rifles, Includes Enhanced Takedown Pin, Enhanced Pivot Pin, 2 KNS Detents, and 2 Springs, Black Finish BAD-EPS 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.