M&A Parts, Inc. is a well-known supplier of AR-15, M16, and tactical firearm components, specializing in high-quality parts for various rifle platforms. The company offers a wide range of products, including upper receivers, barrels, bolt carrier groups, and other essential components for building and customizing rifles. M&A Parts is recognized for its commitment to quality, using premium materials and maintaining high standards in the manufacturing process to ensure reliable performance for enthusiasts and professionals alike.