The biorifles typically fired yellow bolts of energy. (ENT: "Rajiin", et al.) A direct hit from a biorifle itself was survivable by a Human, at least temporarily. (ENT: "Twilight") A biorifle could also be connected to a Xindi-Reptilian grenade launcher. (ENT: "Rajiin") It is possible that the construction of biorifles involves kemocite. This is canonically suggested by the fact that one particular rifle – studied by Commander Charles Tucker III and associates in "The Shipment" – had the same subquantum imprint as kemocite and the Xindi weapon.