• (NEW not Resized).300 AAC Black Out Un-Primed Brass Cases - 250 pc Box
  • (NEW not Resized).300 AAC Black Out Un-Primed Brass Cases - 250 pc Box
(NEW not Resized).300 AAC Black Out Un-Primed Brass Cases - 250 pc Box

$52.25






These are new MAST 300 BLK head stamp. 300 AAC Black Out un-primed brass. These are not formed from 5.56 or 223 cases, which will result in longer case life and less case fatigue.  These are virgin cases, ready to be primed. They have been annealed and the anneal iris is present on cases. Annealing adds strength and hardness so you can reload again and again. These cases are packed in a 250 pc bulk box.

Note: Although these are all in size and ready to load, it is always good practice to size all your new brass before use.