Colt 604 M16 Upper Assembly, 20" Government Profile Barrel, Slickside Bolt Assembly, No Ejection Port Cover, 5.56 NATO *Good*

Colt 604 M16 Upper Assembly, 20" Government Profile Barrel, Bolt Assembly, Charging Handle, 5.56 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.
Front sight is square post, with front sling swivel.
Barrel is marked "C MP 5.56 NATO 1/7".
Colt proof marks on the front right side of the early slick side receiver.
Slickside bolt carrier is unmarked, but has the early colt crimps in the gas key.
Bolt is marked for magnetic partical inspection.
Triangle handguard retainer with A2 circle handguards.
Original slabside type upper receiver, forged front sight base with the drain hole, and birdcage flash hider.
Counterbored front pivot pin hole.
Lower assembly, FCG parts and buttstock are NOT included.
Bore is in good condition with wear and light pitting.
No ejection port cover.

This Upper Assembly includes:
- Early M16 triangle handguard cap with A2 circle 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" barrel with birdcage flash hider.
- Colt slickside bolt carrier assemby with early style colt crimps on the gas key.

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.