Blackout AR

Discussion in 'Technical Questions & Information' started by cuzndude, May 6, 2012.

  1. cuzndude

    cuzndude New Member

    Joined:
    Jan 10, 2010
    Messages:
    2
    So , am I understanding correctly; 300 blackout is .223 necked up to 30 cal. bullet. Thus ALL I have to do to shoot 300 b-out with an AR is change barrel ?