Black Rain Ordnance Spec15 Series AR15 5.56mm Semi-Automatic Rifle with Bazooka Green Cerakote Finish for sale. Black Rain Ordnance manufacturing standards are prominent throughout their line of Spec weapons, allowing them to produce the highest quality rifle with a cost-effective price tag. The Chromoly barrels and Black Nitride Bolt-Carrier Groups in the Spec Series combine to provide the reliability and dependability you expect from the BRO family of rifles. Whether it’s your first rifle, a patrol weapon, or simply supplementing your collection, the Spec Series is a great addition to your lineup.