Colt 604 M16 Upper Assembly, 20" Pencil Barrel, Chrome Bore, Cage Flash Hider, Late Triangle Handguards, Grey Finish, 5.56 NATO *Good*

Colt 604 M16 Upper Receiver Assembly, 20" Pencil Profile Barrel, chrome bore, Bird cage Flash suppressor, later style non-glossy triangle handguards, gray finish, 5.56X45 NATO, in *Good* condition.

Sold Individually.

Own a part of history with this early Colt Manufactured upper assembly!
Numbered rear sight dail with raised arrow directional marker on the receiver.
Barrel is marked "C" near the muzzle and "MP" at the front sight base.
Colt proof marks on the front right side of the slab side receiver.
Later style non-glossy triangle handguards with straight barrel nut.
Original slabside type upper receiver, forged front sight base with the drain hole, and birdcage flash hider.
Lower assembly, FCG parts, charging handle, bolt carrier assembly and buttstock are NOT included.
Some light pitting in the bore.
Small hole front pivot pin.
Early gray color receiver.

This Upper Assembly includes:
- Later M16 triangle handguards and straight barrel nut assembly.
- Forged type front sight base.
- Early L shape 2 aperature rear sight with windage adjustment. 
- M16 carry handle upper.
- 20" pencil barrel with with birdcage flash suppressor.
- Early 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.