If you've spent any time around rifles, you've heard the debate: bolt-action versus semi-auto, AK versus AR, "old reliable" versus "modern modular." But when the dust settles, one platform keeps coming out on top for sheer versatility — the AR-15. Decades after its introduction, it remains the most adaptable rifle platform in America, and for good reason. Here's why the AR-15 has earned its reputation as the do-all GOAT (Greatest Of All Time). 1. Unmatched Modularity No other rifle platfor …