CP Custom Products Impulse/Ion/NXT barrel back .693

Custom Products Control Bore Impulse/Ion/NXT Threaded .693. 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.