Colt M16A4 Flat Top Upper Assembly, 20" 1/7 Chrome Lined BBL, 5.56X45 NATO *New In Box* B-Model

Colt M16A4 Flat Top Upper Assembly, 20" 1/7 twist Chrome Lined BBL, 5.56X45 NATO, *New In Box* B-Model

Sold Individually.

Get one of these high quality upper assemblies for your build!
This is a "B-Model" from the Colt factory, and has both dark gray and black colored parts.
RO901Colt manufactured M16A4 flat top upper receiver with A2 profile 20 inch barrel.
Includes standard 12" handguards, A2 flash hider, NO carry handle.
Receiver marked with Keyhole forge marking.
A2 profile chrome lined Barrel is marked C MP 5.56 NATO 1/7.
This upper has passed all safety and testing conditions from the factory.
Packed in factory box (pictured)

This Upper Assembly includes:
- Colt manufactured M16A4 type flat top upper, case deflector and forward assist assembly.
- A2 style birdcage flash hider.
- 1/2x28 muzzle threading.
- Colt manufactured 20" A2 style barrel, 5.56 NATO with M4 feed ramps and 1/7 twist rate.
- 20" barrel with A2 type birdcage flash hider, and chrome lined bore.
- Standard M16A2 style handguards.

NO rear sight, charging handle, bolt carrier assembly or carry handle. 

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 new parts without proper knowledge could cause a firearm to malfunction
and cause property damage, injury or death.

Colt Part #: SP401547      RO901  B-Model