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 CP Tactical hand guards. The thread adapter is the same thread as the AR-15 1 7/8" - 20 thread. Please note the X7 and Spyder MR barrels cannot accept the thread adapter and hand shrouds.