HM Defense’s HMB Bolt brings a patent-protected innovation to the AR platform, rethinking bolt geometry to boost durability and reliability. By eliminating many of the stress points common to standard AR bolts, this design significantly extends service life and maintains consistent performance, even under heavy use. Precision-machined from premium materials, the HMB Bolt ensures smoother cycling, stable lockup, and reduced wear. The result is a robust, dependable upgrade—showcasing HM Defense’s commitment to pushing the boundaries of modern firearm technology.