The Bergara BXR BXR002 .22 LR Semiautomatic Rimfire Rifle is constructed with a carbon fiber barrel that sports 1/2x28 muzzle threading. The rifle is integrated with a 30 MOA picatinny rail as well as QD flush cup sling and swivel mounts. Bergara BXR BXR002 .22 LR Semiautomatic Rimfire Rifle - Rifles Rimfire at Academy Sports