(Article courtesy of Tactical Life) TrackingPoint is bringing the .300 Blackout round back to its stable with its new M400XHDR rifle. Built on the Austin, Texas-based company’s AR platform, the Gen 2, night-vision enabled M400XHDR boasts a 400-yard lock range and the knockdown power of a .30 caliber. The M400XHDR also shares a lot of the same technological advances […]