Introduced in 1979 with very few imported to the United States. Post front and two leaf peep rear sights with an integral rifle grenade launcher and flip-up grenade sight. Two part frame with the standard maker and import markings on the upper along with a spring loaded dust cover and the right handed "S/1" trigger group on the lower receiver. Combination vented metal and ribbed plastic handguard, sling mounts, two position gas regulator, smooth plastic pistol grip, and fixed buttstock. Includes original box and canvas sling.