SMI Bolt Complete Assembly 5.56/.223 MP (Manganese Phosphate)
Improvements in design, machining and finish over the competitors bolt. This bolt will provide years of trusty service in your rifle. An excellent replacement for your standard Mil-Spec bolt.
Finish: Manganese Phosphate
About Signature Manufacturing
Signature Manufacturing has been a leader for the last 22 years in providing unique and improved products, whether firearms, parts for small arms, mobile security and communications platforms or blast panels. We employ experienced engineers, designers and machinists who pride themselves in precise quality work to provide prototyping, patent product development and production of quality products.