The Straightline barrel kit is a higher performance barrel with 3 precise bore sizers.
It has spiral porting
This barrel is 16 inches long and is a matt black finish.
Sizers are .683, .686, and .688
This is a "new old stock" find. The cloth case is dusty.
Tippmann Parts Staff Thoughts: This find is a great deal. It allows for very accurate shot with a tactical barrel look.