VALUE-LINE .45 ACP 8.0\" AR15 Barrel- Nitride\n\n- Chamber: 45 ACP\n- Length: 8\" (7.5\" When compared to a standard AR15 barrel for handguard measurements)\n- Threads: .578x28\n- Finish: Melonite\n- Twist: 1:16\n- Material: 41V50 Chrome Moly Vanadium\n- Marked for Caliber and Twist\n- Weight: 17.36 oz\n- Fully Made In House From KAK Industry Produced Blanks\n- Taper profile