This is a godly 20 inch sniper barrel for the BT TM7 paintball gun. With this barrel, your marker becomes a deadly piece of weaponry on the field. The inside of the barrel has rigid all around in a straight projection. The paintball never touches the barrel, just the rigid. Add this barrel on your BT TM7 paintball gun and you will increase your kills like never before. If you are a sniper, this is the barrel that you will fall in love with.