The CP Tactical Line is here! You won't find a more realistic setup than this. The barrel has been precision honed and polished to give you the best accuracy of any tactical barrel on the market. The standard 1 piece barrel comes with a removable tip. To add accessories, simply remove the thread protector, thread on your thread adapter and add any of the hand shrouds that we have available. The thread adapter is the same thread as the AR-15 1 7/8" - 20 thread. The Combat Pro is an 18 Inch version which comes with the Swiss tip and is fluted down the entire length of the barrel.