OA-22

The OA-22 series delivers precision-engineered .22LR complete upper receivers built for high speed and hard use. Each upper features Obsidian Arms’ billet upper receiver design paired with the Obsidian/Taccom .22LR bolt system for reliable performance. Available in compact pistol configurations or full-length rifle setups, the OA-22 drops directly onto any MIL-SPEC AR-15 lower receiver — giving you an affordable way to train with your existing platform. Whether you’re looking to reduce ammo costs at the range or add a dedicated .22LR option to your collection, the OA-22 is built to the same standards as our centerfire uppers.