Straight-Pull Bolt Action - Linear loading system enables fast operation for nearly instantaneous follow up shots; Interchangeable Barrel System - Allows multiple calibers to be used on the same rifle; Barrel - Made from Steelium alloy.; Trigger - Single stage trigger; Reliability - Underwent same tests for NATO weapons including operation on wet environments, controlled overheating tests, extreme low temperature tests, and a 120,000 shot endurance test; Safety - Ergonomic, 3-position safety located on tang of weapon