Colt 604 M16 Project Upper, 20" Pencil Barrel, Chrome Bore, Cage Flash Hider, Triangle Handguards, 1970-1971 Production, Ring in Bore, 5.56 NATO *As Is*

Colt 604 M16 Project Upper Assembly, 20" Pencil Barrel, Chrome Bore, ring in bore near muzzle, Triangle Handguards, 1970-1971 Production, 5.56 NATO, sold *As Is* with NO returns accepted.

Sold Individually.

Great parts for your next project!
Numbered rear sight dial with raised arrow directional marker on the receiver.
Barrel is marked "C MP B" for Colt Magnetic Particle Chrome Bore.
Colt proof marks on the front right side of the slab side receiver.
Triangle handguards have moderate wear, and some light damage (as pictured).
Original slabside type upper receiver, forged front sight base with the drain hole, and birdcage flash hider.
Later style forged front sight base is "C" and Bell marked, with drain hole.
Lower assembly, FCG parts and buttstock are NOT included.
Chrome lined bore is in *Good* shiny condition; however, there is a small ring in the bore about 1" from the muzzle.
Small hole front pivot pin.
Early gray color receiver may be faded and worn.

This Upper Assembly includes:
- Early M16 triangle handguards and straight barrel nut assembly.
- Forged type front sight base, "C" marked.
- Early L shape 2 aperature rear sight with windage adjustment. 
- M16 carry handle upper.
- 20" pencil barrel with with birdcage flash hider.
- Late bend gas tube.

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.