Precision Reflex .308 DPMS Round Intermediate Forearm Tactical Rail 5.5 in Black. 5 inch intermediate top rail for 308 Armalite round intermediate forearms. Rail can be used in top or bottom positions. Rail is constructed of T6 hard coat anodized aluminum with steel Bar nut and 3 #10-32 flat head screws. Specifications for Precision Reflex .308 DPMS Round Intermediate Forearm Tactical Rail: Manufacturer: Precision Reflex Fabric/Material: Aluminum Cant: 0 MOA Gun Make: AR Platform Quantity: 1 Package Contents: Precision Reflex .308 DPMS Round Intermediate Forearm Tactical Rail Precision Reflex 03-070-55D: .308 DPMS Round Intermediate Forearm Tactical Rail 5.5 in Black