SIGWO Arms is a custom firearms shop on Springfield’s Historic C-Street specializing in gunsmithing, precision machining, Cerakote finishes, optic milling, barrel threading, and firearm customization. In addition to custom services, the shop offers firearm sales, accessories, transfers, and firearms training led by experienced staff.

Visitors can expect a professional workshop and retail space focused on technical expertise and personalized service rather than a traditional sporting goods store. With its emphasis on craftsmanship, repair, and custom work, SIGWO Arms represents the skilled trades and specialty businesses that continue to be part of Commercial Street’s diverse business community.