GC_UPC Diamondback DB15 SSB AR-15 Semi-automatic 5.56 NATO/.223 Rem. 16 inch Barrel 30+1 Rounds $599.99 DB175AK001 show more like this $14.99 Gun Processing Fee Sportsman's Guide GC_UPC Diamondback DB15 Semi-Automatic Centerfire Rifle 5.56x45mm NATO 16" Barrel Black and Black Pistol Grip $616.00 - show more like this 9.99 MidwayUSA GC_UPC Diamondback DB15 Semi-Automatic Centerfire Rifle - 413264 $616.00 141184 show more like this 9.99 MidwayUSA