**NEW BRASS** MAST Headstamp .300 AAC Blackout Primed Cases 250 cases


These are new not cut and resized. .300 AAC Blackout Cases w/ #41 Mil-Spec small rifle primers. Cases are annealed for longer brass life. Although these cases are sized and in spec  there may be some dings and dent do to shipping. So it is always recommended and good reloading practice to size on your own as well.