Shop › MAG HEXMAG SHORTY AR15 20RD BLK MAG HEXMAG SHORTY AR15 20RD BLK $12.99 HEXMAG Magazine, 223 Remington/556 NATO, 20 Rounds, Fits AR Pattern Rifles, Polymer, Black HX20-AR15-BLK Quantity: Add To Cart Added! HEXMAG Magazine, 223 Remington/556 NATO, 20 Rounds, Fits AR Pattern Rifles, Polymer, Black HX20-AR15-BLK