Shop › FORTIS BILLET DUST COVER STD BLACK FORTIS BILLET DUST COVER STD BLACK $32.00 Fortis Manufacturing, Inc. Billet Dust Cover, Fits AR-15, Black AR15DstCvr-Std-BLK Quantity: Add To Cart Added! Fortis Manufacturing, Inc. Billet Dust Cover, Fits AR-15, Black AR15DstCvr-Std-BLK