i can sell you a whole electronic spyder clone for less than what you would pay for a kingman rocking trigger... or maybe less than an e-frame dont know what they cost
its a e rex pro, the electronic frame has 4 firing modes up to 20 bps, LCD display (kingman eframes have LEDs of different colors, this actually displays words and numbers), and the pull is much lighter than an e frame because there is no spring, the microswitch returns the trigger. i can walk this thing about 13-14 bps. polished hammer, hi flowing bolt for better effeciency, and this thing pinches paint on 95% of all misfeeds. that means instead of chopping and clogging up your gun, the bolt pins the ball between itself and the body, so you just recock the gun and dont have to worry about cleaning up a mess or losing accuracy. also comes with a pure energy reg, macroline kit, dead on drop forwards, and 14" 32* quiet riot barrel. all that for $140 shipped, or pm me and make an offer, may part out just the trigger frame as well.
oh and i have pics of everything if you want. can also include 12oz co2 tank and ricochet rhino electronic hopper.