AR-15 M-16 Special Barrels for 6.8SPCII, 6.5 Grendel

6.8 SPC2 SS Bull Barrel 24 inch Length with 6.8SPC Bolt.
6.8 SPC 16 inch HBAR Barrel with 6.8SPC Bolt.
6.8 SPC2 20 inch HBAR Barrel with Bolt.