This manual covers the Bushmaster 308 Master, a semi-automatic firearm chambered in .308 Winchester. Designed for reliability and performance, this model features a direct impingement operating mechanism and a picatinny rail system for optics. Its construction emphasizes durability, making it suitable for a range of applications where precision and dependable function are paramount. This comprehensive Master Manual provides essential information for the operation, maintenance, and care of your Bushmaster 308 Master. It details critical procedures such as cleaning, lubrication, and safe storage, alongside fundamental safety rules for handling firearms. Technical specifications, including typical barrel lengths and weight variations, are also included to assist owners and technicians in understanding and maintaining this firearm.