CMMG-55B5255: CMMG Mid Length
Upper - 16.0" Govt. 5.56 NATO 1/7 Twist (Chrome-Lined Hammer Forged)
CMMG mid-length upper is built from the standard forged A3 flat top receiver
with M4 feed ramps. The barrel is Cold Hammer Forged, Light weight government
profile under the handguards, 5.56mm NATO chamber and bore with a 1:7 twist
ratio and threaded 1/2x28 with removable A2 flash hider. Proprietary WASP
surface treatment on all exterior surfaces.
CMMG M4 Uppers are pre head spaced
and test fired before shipping and include a Semi-Auto Bolt Carrier & Charging
Handle. CMMG uppers are built to Mil-Spec standards and will mount onto any
standard mil-spec AR15 lower receiver assembly.
Features F-marked forged front sight base compatible
with A3 removable carry handle and folding back up sights.
Note: Not for older Colt lowers with internal sear block. Some gunsmith fitting
will be required to adapt this upper to your Colt lower.
CMMG Mid Length Govt. standard
- Cold Hammer Forged Barrel
(Fully Chrome Lined)
- 5.56x45 NATO
- Caliber: .223
- Govt. Light Weight Mid Length
Barrel with 1:7 Twist
- 1/2x28 RH Muzzle Thread
- Preban features with Bao-Lug
- Mid length gas system with
standard 8.125" handguard
- 11 degree recessed target
crown for optimal accuracy
- WASP treated barrel finish,
including under the front sight base
- A2 Flash
hider installed with crush washer.
- Forged M4 upper receiver is T
marked and has M4 feed ramp cuts
- Semi Auto
bolt carrier & Charging Handle Incl.
- Mil-spec .250 diameter
- Each barrel is individually
magnetic particle tested.
- Barrels are engraved CMMG
- Each upper is head spaced and
test fired before shipping.