Gas-operated semi-automatic sporting rifle. Chambered for various popular calibers from .243 up to .338 Magnum cartridges. Offered with 22" or 24" barrel, with folding leaf sight until 1980. Finish blued, with checkered walnut stock. Various grades offered, differed in amount of ornamentation, quality of materials and workmanship utilized. Earlier models manufactured in Belgium by FN; these guns would be worth approximately 15 percent additional over guns assembled in Portugal from parts manufactured by FN. Early .338 Magnum model rarely encountered and would be worth approximately 25 percent additional. Grade I values furnished are for Portuguese-assembled guns from 1977 until introduction of BAR Mark II in 1993. This model introduced in 1967; discontinued in 1977.