J & B Machine is a contract manufacturing company located in Greeley, Colorado.  We specialize in OEM production runs ranging from 100 to 100,000 units.  We offer a wide array of machining and fabrication services, allowing our team to control all steps of the manufacturing process.  From Swiss-style turning and dual spindle multi-axis lathes to 5-axis mills, we excel in delivering precision products on a structured schedule.  We currently manufacture across all facets of the firearms industry, from optics to suppressors, lowers to slides, our team is ready to deliver the value you seek! (less)