Islamic Crossbow?

[B.I]

i am trying to look into the crossbow in medieval and post medieval islamic culture. there are 3 examples known, 'believed' to be islamic. these are almost exactly like the german wood/ivory examples of the 15thC, with a slight styling of the ivory which hints at islamic influence.

is anyone aware of any reference, whether text or image that can validate the existance of this weapon in islamic hands, in any country influenced by islamic culture?

would greatly appreciate any input.