Many are like zombies and surface periodically at shows or on line. Some, like mine, were turned in when the DCM offered a receiver exchange for worn out receivers. For something like $21 (IIRC) you sent an old receiver and you got back a refurbished, new-condition barreled receiver... what a deal! They said no welds but they took whatever you sent. Billy Pyle told me he bought a pair of demil halves, glued them together with Bondo and spray painted it black. They took it and sent him a 1940 receiver with the original 1940 barrel.