KNIGHT'S ARMAMENT URX-6 5.56MM NATO M-LOKHANDGUARD FOR SR-15 The URX 6 is the latest proprietary free-float modular handguard system from KAC, designed for exceptional resistance to shift from impacts while offering easy replacement and a comfortable grip profile on SR-15 series rifles. It features a full-length 12 o'clock MIL-STD-1913 Picatinny rail for optics mounting, complemented by seven sides of M-LOK slots for versatile accessory attachment, and employs a self-indexing barrel nut with locking tabs for simplified installation compared to prior URX models. Host receiver must have corresponding notch on the top rail. SPECS 10.5" HG c Mfg: Knights Armament