Nemo Arms [Ti]One
An AR rifle in .308 with many parts primarily made out of titanium. Of the parts composed of the the extremely durable and lightweight metal are the upper and lower receiver, the handguard, the gas block, the buffer tube, the bolt carrier, the compensator and the charging handle. Never meant to be a full-production gun, Nemo Arms made it to demonstrate their machining ability. If you do want to buy Serial Number 1, price tag is around $100,000.