CANIK Magazine, 9MM, 21 Rounds (18Rd Mag with +3 Extension), Fits Canik TTI Combat, Full Size, Black With +3 Bronze Extension MA2363 Compatible with the Canik TTI Combat handgun" the Canik TTI Combat 9mm 18-Round Magazine with +3 Extension is a TP9-series magazine featuring steel construction with a corrosion-resistant finish for superior durability and reliable performance in any shooting application.