The MAG2949 magazine adapts to the Cadex CDX-50 TREMOR 50 BMG rifle and the PGWDTI LRT-3 rifle of the same caliber. Its single stack single feed design makes it quite more reliable than the more common DSSF designs. The cartridges are center fed into the action bore and the magazine spring pushes the round straight up rather than at an angle avoiding the recurring jam and misfeeds of staggered feed designs.