Colt 601 M16 Upper Assembly, 20" Barrel, w/ Early Slick Side Chrome Bolt Carrier Assembly, Duckbill Flash Hider *Good*

Colt 601 Upper Receiver Assembly 1959-1963, 20" Barrel, 3-prong "duckbill" flash hider, triangle handguards, chromed slickside bolt carrier assembly, 5.56X45 NATO, in *Good* condition.

Sold Individually. (The upper pictured is the one you will receive.)

Own a part of history with this early Colt Manufactured upper assembly!
Possible years of production on this assembly are between 1959 and 1963.
Early type with non-numbered rear sight knob and no directional markings on receiver.
Early cast front sight base, no sling swivel included.
This unmarked early barrel does not have the chrome-lined chamber or bore.
Colt proof marks on the front right side of the receiver.
Black triangle type handguards have some light damage (as pictured).
Includes original chromed slickside bolt carrier assembly and 3-prong "duckbill" type flash hider.
The cam pin, fp retaining pin, extractor, and bolt have been replaced in service, and are not chromed parts.
Lower assembly, FCG parts and buttstock are NOT included.
Light surface rust at the front sight base and handguard retainer.
Some light pitting in the bore.
Charging handle has a standard black finish (not early type).

This Upper Assembly includes:
- Early M16 triangle type handguard assembly with handguard cap and straight barrel nut assembly.
- Early cast type front sight base.
- L shape rear sight with windage adjustment. 
- M16 style carry handle upper, with large square plate ejection port cover.
- 20" barrel with 3-prong "duckbill" type flash hider.
- Chromed bolt carrier with early heavy flat head firing pin.
- 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.