LaRue Tactical PredatAR Threaded Barrel AR Platform AR-10 7.62mm 18in Mid Length 1/8 Twist 5/8x24 Thread Black LT10-6S-T-308-8-18-Y-1M. PredatAR owners enjoy lightweight maneuverability with sub-MOA accuracy. Requires a 0.625" gas block. Specifications...