Raven Concealment Copia Pistol Double Magazine Carrier Standard Profile Double Stack 9/40 Magazine Black. Their innovative cavity design and retention system allows them to be used ambidextrously with the double-stack magazines of nearly 100 different handgun models chambered in 9/40/357 Specifications for Raven Concealment Copia Pistol Double Magazine Carriers: Manufacturer: Raven Concealment Color: Black Magazine Type: Double Stack Hand: Ambidextrous Package Contents: Raven Concealment Copia Pistol Double Magazine Carriers Raven Concealment DMCBKT: Copia Pistol Double Magazine Carrier Standard Profile Double Stack 9/40 Magazine Black