Custom Products Barrel Back- A5 - BT-4 Thread PurpleThe Custom Products 2 Piece Barrel takes your marker's accuracy to a new level. Every Custom Products Barrel goes through a 9 step process on the some of the most technologically advanced and precise machinery on the planet. After it leaves the machine, each barrel is hand inspected and hand polished for a finish that is near perfection. A smoother inner bore means less friction on the ball which translates to less barrel breaks and greater gas efficiency.Features:- Aluminum construction- Precision machining and tolerance- Mirror smooth inner bore- Barrel Back only- Requires CP Barrel FrontNOTE: Items marked with double asterisks (**) are custom ordered and will be shipped separately from the rest of your order. Please allow an additional 2-3 business days shipping time. Expedited shipping services (Next Day, Second Day, etc) are not available for items with double asterisks (**).