05 Jan 300 AAC Brass Posted by Will Evans 0 Comments Categories: ATC Originals, Brass Tags: 300 AAC, 300 Blackout, Brass Description Description CALL TO ORDER 25 pieces – 300 AAC brass made from once fired .556 with assorted head stamps. All of this brass is made in house by hand! Related products Ladies AR15 Pmag Read more ATC Billet Upper reciever AR15 Read more Ladies Digital Pmag Read more