Now we can see why the full name of Manufrance was Maanufacture Francaise d'armes et cycles. And it was not the only shotgun maker to get involved with bikes, others are:

BSA
HUNTER ARMS
REMINGTON BICYCLES
LEFEVER BIKE CHAIN
FOX MACHINE COMPANY
JOHN LOVEL BOSTON
A.G. SPALDING
IVER JOHNSON ARMS AND CYCLE WORKS
SIMSON OF SUHL
GREENER (F.GREENER)
F.WILLIAMS, (AMERICAN GUN AND CYCLE WORKS)
FN BELGIUM
BROWN BROTHERS (yes, the prestigious UK maker)

GLS love that scabbard!