Precision Reflex Gen 3 DPMS .308 Forearm 15in Length w/ Holes no Rails Carbon Fiber Black. The latest PRi Gen III free float forearm carbine length are constructed of light weight high strength carbon fiber aluminum and high strength steel for the best possible combination of weight and strength. The carbon fiber also reduces the amount of heat transferred to the shooters hand during rapid or high volume firing. The forearm comes with 4 rails a 8.5in rail on top and (3) 3in rails at 36 and 9 O'clock positions. Specifications for Precision Reflex DPMS .308 Forearms: Manufacturer: Precision Reflex Fabric/Material: Carbon Fiber/Aluminum/Steel Gun Make: DPMS Gun Model: DPMS LR-308 Gun Type: Rifle Gun Rail: Standard Model Generation: 3 Quantity: 1 Package Contents: Precision Reflex DPMS .308 Forearms Precision Reflex 03-072-1415THB: Gen 3 DPMS .308 Forearm 15in Length w/ Holes no Rails Carbon Fiber Black