Gray Ops CNC AICS Magazine Base Pad Black. NO MORE tattered tape on your mags to denote calibers or match it to your rifle. DISACLAIMER: These are not extensions and will not add capacity to your magazines. Features of Gray Ops CNC AICS Magazine Base Pad Only compatible with: AICS 10 / 12 Magazines Accurate Mag AICS Mags MDT Mags Not Compatible with: Magnum caliber AICS Mags 5 round AICS Any add on magazine extensions Package Contents: Gray Ops CNC AICS Magazine Base Pad Gray Ops CNC GO24AI-03-Black: AICS Magazine Base Pad Black