6 Thompson Center Arms barrels. Calibers include, 6.8 Remington, .375 Winchester, 7 mm T/CU, and 7 mm BR Remington. Scopes are 1) Tasco Golden Antler 3-9x32 scope. 2) Simmons 3-9x32 scope. 3) Blazer 3-9x50 scope. 4) Bushnell Magnum Phantom 2.5x scope.