Manufactured in 1964. Three prong flash hider, post front sight and bayonet lug on the gas block, vented triangular handguard, standard markings on the lower receiver, A1 pattern upper with fixed carry handle, no deflector or forward assist, unserrated bolt carrier, chrome plated bolt/extractor, early style buffer and selector switch. Standard two leaf rear peep sight, checkered grip, and fixed buttstock with solid serrated buttplate. Magazine absent.