GC_UPC Diamondback DB1721K001 DB15 Combo 5.56x45mm NATO & 300 Blackout 16" 30+1 Black Carbon Rec 12" M-LOK Handguard Magpul Carbine Stock & Grip Includes 2 Uppers $921.00 DB1721K001 show more like this Free Shipping GunStuff TV GC_UPC Diamondback DB1721K001 DB15 Combo 5.56x45mm NATO & 300 Blackout 16" 30+1, Black, Carbon Rec, 12" M-LOK Handguard, Magpul Carbine Stock & Grip, Includes 2 Uppers $921.00 DB1721K001 show more like this Low Shipping DB Firearms