Obsidian Arms OA-15C Billet Upper Receiver Black OA-15C-UR-BLK. Machined from 7075 T6 Aluminum Billet for a stronger better fitting more unique looking receiver. Specifications for Obsidian Arms OA-15C Billet Upper Receiver: Manufacturer: Obsidian...
Obsidian Arms OA-15C Billet Upper Receiver Black OA-15C-UR-BLK. Machined from 7075 T6 Aluminum Billet for a stronger better fitting more unique looking receiver. Specifications for Obsidian Arms OA-15C Billet Upper Receiver: Manufacturer: Obsidian...