Macdev Droid Blue Gloss For years, spool valve paintball markers have been inefficient, slow and unreliable. MacDev have created a new generation spool that is designed to change the way that players view spool valve markers. The Droid spool uses patent pending technology to fire each ball using less air and with faster cycles. This revolutionary spool design has been packed into a highly milled and finished body. Feed tube: threaded, cam lock Barrel threads: Autococker Barrel: 2pc MatchStik Electronics: MacDev Militia Soft V5 Fire modes: 12 Eye: visible break beam Indication: Chameleon LED Detent: Spring ball Inline regulator: Gladiator Efficiency: 1700+ (68/4500psi) Operating Pressure: 100psi