A feedstock delivery system for injection molding, comprising: a vessel unit having a vessel defining an internal volume thereof and an inlet opening in communication with the internal volume, the inlet opening defining an inlet of the feedstock delivery system for receipt of feedstock into the internal volume; a first dispensing unit having a first end, a second end, and a first conduit disposed therebetween, the first end being connected to the vessel unit such that the first conduit is in communication with the internal volume of the vessel, the second end being configured to connect to an injection mold and having an outlet opening defining an outlet of the feedstock delivery system; a fluid jacket (50, 150) enclosing at least a portion of the vessel and at least a portion of the first conduit of the first dispensing unit such that heated fluid flowing through the fluid jacket (50, 150) transforms the feedstock into a feedstock slurry and maintains the feedstock slurry at a constant temperature as it is dispensed from the internal volume of the vessel unit and out through the outlet opening of the first dispensing unit via at least the first conduit; and a fluid circulator module in communication with the fluid jacket (50, 105) and configured to heat a fluid and circulate the fluid through the fluid jacket (50, 105), wherein the first dispensing unit includes a second conduit, a buffer chamber, and a piston within the buffer chamber, the buffer chamber being in communication with the first and second conduits and disposed therebetween, wherein the first dispensing unit includes first and second valves, the first valve being arranged on the first conduit to regulate flow of the feedstock slurry between the first conduit and buffer chamber, the second valve being arranged on the second conduit to regulate flow of the feedstock slurry between the buffer chamber and second conduit, the second conduit defining the outlet opening of the feedstock delivery system, and wherein the fluid jacket (50, 150) includes a first fluid jacket at least partially enclosing the vessel of the vessel unit and a second fluid jacket at least partially enclosing the first conduit of the first dispensing unit, the first and second fluid jackets (50, 150) being separate from each other such that fluid flowing through the first fluid jacket is isolated from fluid flowing through the second fluid jacket. a vessel unit having a vessel defining an internal volume thereof and an inlet opening in communication with the internal volume, the inlet opening defining an inlet of the feedstock delivery system for receipt of feedstock into the internal volume; a first dispensing unit having a first end, a second end, and a first conduit disposed therebetween, the first end being connected to the vessel unit such that the first conduit is in communication with the internal volume of the vessel, the second end being configured to connect to an injection mold and having an outlet opening defining an outlet of the feedstock delivery system; a fluid jacket (50, 150) enclosing at least a portion of the vessel and at least a portion of the first conduit of the first dispensing unit such that heated fluid flowing through the fluid jacket (50, 150) transforms the feedstock into a feedstock slurry and maintains the feedstock slurry at a constant temperature as it is dispensed from the internal volume of the vessel unit and out through the outlet opening of the first dispensing unit via at least the first conduit; and a fluid circulator module in communication with the fluid jacket (50, 105) and configured to heat a fluid and circulate the fluid through the fluid jacket (50, 105), wherein the first dispensing unit includes a second conduit, a buffer chamber, and a piston within the buffer chamber, the buffer chamber being in communication with the first and second conduits and disposed therebetween, wherein the first dispensing unit includes first and second valves, the first valve being arranged on the first conduit to regulate flow of the feedstock slurry between the first conduit and buffer chamber, the second valve being arranged on the second conduit to regulate flow of the feedstock slurry between the buffer chamber and second conduit, the second conduit defining the outlet opening of the feedstock delivery system, and wherein the fluid jacket (50, 150) includes a first fluid jacket at least partially enclosing the vessel of the vessel unit and a second fluid jacket at least partially enclosing the first conduit of the first dispensing unit, the first and second fluid jackets (50, 150) being separate from each other such that fluid flowing through the first fluid jacket is isolated from fluid flowing through the second fluid jacket.