Magnum Research Mr L5 Bolt Assembly for .44 Magnum and .50 AE Rifles

The Magnum Research Mr L5 Bolt Assembly for .44 Magnum and .50 AE provides a high-performance solution for converting compatible firearms from .357 Magnum, integrating seamlessly with the barrel and magazine to deliver reliable cycling and consistent chambering. Engineered as a purpose-built bolt part for rifle applications, this L5 assembly enhances incremental upgrades by offering precise fitment, durable materials, and smooth operation under demanding conditions. Ideal for shooters seeking to bridge calibers within Magnum Research platforms, the bolt assembly supports safe, repeatable accuracy across reloads and field use, while contributing to a streamlined, one-step conversion workflow when paired with the appropriate barrel and magazine. The design emphasizes robustness and repeatable headspace, supporting dependable chamber seal and reduced downtime during field maintenance or range sessions. Whether updating a classic build or expanding your ammunition versatility, the Mr L5 Bolt Assembly stands out as a trusted component for rifle bolt parts enthusiasts who prioritize performance, compatibility, and long-term reliability in .44 Magnum and .50 AE applications.