Pico: All-Metal Hotend for RepRap 3D Printers by B3 Innovations, LLC — Kickstarter. A premium, fully assembled all-metal hot-end capable of 300°C printing. Available in 3mm & 1.75mm. Machined and Assembled in the USA.
MG Plus HotEnd by rp_one_labs.
Metal "MB" HotEnd for 1.75mm filament by rp_one_labs - Thingiverse
E3D-v4 All metal HotEnd - (2 Week Pre-Order)