Shop › PROMAG MKA 1919 12GA 2.75" 10RD BLK PROMAG MKA 1919 12GA 2.75" 10RD BLK $51.99 ProMag Industries Magazine, 12 Gauge, 10 Rounds, Fits MKA 1919, Polymer, Black MKA-01 Quantity: Add To Cart Added! ProMag Industries Magazine, 12 Gauge, 10 Rounds, Fits MKA 1919, Polymer, Black MKA-01