Manufactured in 1965. Post front and windage adjustable flip up two leaf rear peep sights, early style three-prong flash hider, gas block with bayonet lug, ventilated triangular handguard, standard markings on the lower receiver, correct early style upper with fixed carry handle, no forward assist or deflector, correct early style bolt carrier without serrations, checkered grip, and fixed buttstock with the early Edgewater designed buffer tube and serrated rubber recoil pad.