Shoot, I might have been wrong about the coil spring if that's what Kershaw's website says. I've never owned a launch series. When the question was asked, I looked it up and Knifeinformer says "Pressing the button next to the pivot screw (which has two concentric red rings like all Launch knives) depresses the blade lock plunger, allowing the spring tension to release counter-clockwise and snap the blade out. It has a coil spring with two 90 degree “elbows
” – one slots into the blade and the other into the handle.
So I don't really know who's information is right. Or possibly some of their Launches use torsion bars and some use coil springs.