Shop › BALLISTIC BBL 6.5 GREN 18" SPR RIFLE BALLISTIC BBL 6.5 GREN 18" SPR RIFLE $232.75 Ballistic Advantage Premium Series, SPR Profile Barrel, 6.5 Grendel, Fits AR15, 18" Threaded Barrel, 5/8x24" Thread Pitch, 1:8" Barrel Twist, Rifle Length Gas System, Bead Blasted Stainless Steel, Silver BABL65G003P Quantity: Add To Cart Added! Ballistic Advantage Premium Series, SPR Profile Barrel, 6.5 Grendel, Fits AR15, 18" Threaded Barrel, 5/8x24" Thread Pitch, 1:8" Barrel Twist, Rifle Length Gas System, Bead Blasted Stainless Steel, Silver BABL65G003P