AR-10 rifles use the same modular AR layout as the AR-15 but are scaled up for larger calibers, primarily .308 Winchester and 7.62x51mm NATO. The increased caliber makes them practical for long-range shooting, big-game hunting, and precision applications where the AR-15's 5.56mm is insufficient. Like the AR-15, the AR-10 supports extensive customization: different barrel lengths, stocks, handguards, and optics allow shooters to configure the rifle for specific tasks. The gas-operated rotating-bolt action provides reliable cycling. Recoil is more pronounced than with an AR-15 but manageable with a quality buffer and stock setup.