This particular M28 Tromboncino was restored by my friend Don Voigt. He reattached the launcher to an original M91/28TS carbine. In fact, this carbine had originally held a launcher at some point, but had been put into carbine configuration when the M28 Tromboncino was discontinued in 1934-35. Don and his friend do expert work and it is now fully functioning as an honored part of my collection. Thanks Don!