On Sale F-1 Firearms FDR-15 16" 5.56 Rifle F-1 Firearms Was: $699.98 Sale Price: $549.98 Save: $549.98 In stock Product Description The F1 Firearms FDR-15 is a purpose-built modern sporting rifle designed for shooters who demand reliability, accuracy, and versatility in a lightweight AR platform. Built on a... Caliber5.56 NATO ActionSemi-Auto Barrel length16" Twist rate1:8" HandednessRight-Hand PlatformAR-15