Wilson Combat TR300RCPG16RT7 Match Grade Barrel 300 Blackout 16″ Stainless Bead Blasted Finish 416R Stainless Steel Material Pistol Length with Threading & 1:7″ Twist for AR-15
Diamondback 556C16M50B8R DB Barrel 5.56x45mm NATO 16″ Carbine-Length Black Nitride 4150 Chrome Moly Vanadium Steel
TacFire BAR9MM16BN AR Barrel 9mm NATO 16″ Black Nitride Finish 4150 Chrome Moly Vanadium Steel Material with Threading & 1:10″ Twist for AR-15