Battle Arms Development Dust Cover, Laser Engraved, Matte Finish, Black, Fits AR-15 BA-LS-DC-5.56 NATO Battle Arms Development" Inc. (B.A.D. Inc.) is a design" research" and development firm incorporated in 2009 with a focus on small arms design including firearm components" tools" gauges" accessories" and complete weapon systems. Their laser engraved dust covers are a great" low cost and easy upgrade for your favorite AR15/M16.