HM Defense first introduced their HM50B .50BMG bolt action rifle in December of 2022. Shortly after the release, at SHOT Show 2023, we had a chance to see the rifle and learn about its differences from the Bushmaster BA50 and Remington R2Mi. The company has now announced the release of the second generation of this rifle called HM50B2. Let’s take a look at the key specs and features of this rifle and the changes over the first generation.