GC_UPC Diamondback DB175AK002 DB15 Carbon Series GunStuff Exclusive 5.56 NATO 30+1 16" Black Nitride Medium Taper Threaded Barrel Black Hard Coat Anodized w/Picatinny Rail Aluminum Receiver 15" M-LOK Handguard Black Synthetic Adj Magpul Carbine Stock $616.00 DB175AK002 show more like this Free Shipping GunStuff TV