By 1940, sales had slumped, and Gibson enhanced the model, changing to pickups with Alnico magnets—the forerunner of the P-90, which is still in production. They installed the new pickups on all their electric models, starting in July 1940, renaming the ES-100 and 250 to ES-125 and 300). On the ES-150, Gibson moved the pickup (with adjustable individual poles) closer to the bridge for a more "biting" sound for soloing. Gibson still installed bar-style pickups on request on post-1940 models for Hank Garland, Barry Galbraith, and Barney Kessel. Gibson formally reintroduced the bar pickup in 1958 as a $60 option ()—announcing it with the question, "Remember the straight-bar pickup that was made famous by Charlie Christian?"