Modular firearms are weapons designed with interchangeable parts, allowing users to customize and adapt their firearms for different purposes. This modularity can include changing barrels, stocks, and other components, making it easier to modify the firearm for specific needs, such as hunting or tactical use. These firearms often feature a core receiver that serves as the main component, while various accessories can be added or swapped out. This design approach enhances versatility and can improve performance, as users can tailor their firearms to suit their preferences or mission requirements, similar to how AR-15 platforms operate.