Adolf Furrer was involved with numerous firearms designs in the Swiss Army's arsenal in the first half of 20th century.

Around 1921, Colonel Furrer was appointed as head of the Waffenfabrik Bern, state small arms factory.

[1][7] Ultimately, the submachine gun trials were derailed with no chance for SIG to present their MP-41's capabilities properly and Swiss Army would adopt MP41/44.

[c] Early part of his firearms design career, Furrer mainly worked with Luger P08 and Maxim guns, which may have influenced his liking for the system.

He experimented with stock Luger firing mechanisms and his work would spawn the Furrer 1919 SMG prototype.