Colt 604 M16 Upper Assembly, 20" Pencil Barrel, Triangle Handguards, No Ejection Port Cover, 1969-1970, 5.56 NATO *Good*

Colt 604 Upper Receiver Assembly, 20" Pencil Profile Barrel, Birdcage Flash Hider, triangle handguards, no ejection port cover, 5.56X45 NATO, in *Good* condition.

Sold Individually.

Possible years of production are between 1969 and 1970.
Numbered rear sight dail with raised arrow directional marker on the receiver.
Barrel is marked "C MP C" for Colt Magnetic Particle Chrome Chamber (not chrome bore).
Colt proof marks on the front right side of the slab side receiver.
Triangle handguards may have moderate wear, with some issues from service use (frayed teeth, scratches, etc).
Original slabside type upper receiver, forged front sight base with the drain hole, and birdcage flash hider.
Lower assembly, bolt assembly, FCG parts and buttstock are NOT included.
Some light pitting in the non-chrome lined bore.
Small hole front pivot pin.
Early gray color receiver.
The ejection port cover is missing.

Parts must be inspected and tested by a qualified and competent gunsmith or armorer before use in a firearm.
Not all firearm parts are interchangeable; use of surplus parts without proper knowledge could cause a firearm to malfunction and cause property damage, injury or death.