Unquestionably the most technically advanced precision-machined barrel system ever designed. Every back half in the set is measured three times for accuracy and engineered to greatly increase the performance of your marker and game. This powerful combination promotes reduced friction and increase the accuracy level of your gun tremendously. The Bore sizes are .685, .688, .691 , .693. tip size 14 Inch.
J&J Elite Edge Spyder Paintball Gun Barrel System Reviews