Ballistic Advantage Premium Series, SPR Profile Barrel, 6.5 Grendel, Fits AR15, 16 Threaded Barrel, 5/8x24 Thread Pitch, 1:8 Barrel Twist, Mid-Length Gas System, Bead Blasted Stainless Steel, Silver BABL65G005P This 6.5 Grendel Type 2 chambered 16 inch barrel is machined from 416 Stainless Steel with a bead blasted finish. The Premium Series Barrels feature a Nickel Boron Coated Extended M4 Feed Ramp Extension.