Colt 601 M16 Upper Assembly, 20" Barrel, w/Pistol Grip, Brown, Duckbill Flash Hider, *Very Good*

Colt 601 Upper Receiver Assembly 1959-1963, 20" Barrel, green paint over brown fiberglass hand guards & pistol grip, 3-prong "duckbill" flash hider, triangle charging handle, chromed slickside bolt carrier assembly, 5.56X45 NATO, in *Very 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.
This is one of the few original M16's left with the brown fiberglass furniture, painted green.
Early type with non-numbered rear sight knob and no directional markings on receiver.
Early cast front sight base with roll pin for attaching the front sling swivel.
This barrel does Not have the chrome-lined chamber or bore.
These receiver assemblies have the Colt proof marks on the front right side of the receiver.
Brown fiberglass triangle type handguards & pistol grip have been painted green and have some signs of wear, scratches, small chips, etc...
Includes original triangle type charging handle, chromed slickside bolt carrier assembly and 3-prong "duckbill" type flash hider.
Lower assembly, FCG parts and buttstock are NOT included.

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 and machined retaining pin.
- Original brown fiberglass pistol grip.

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.