CM4 5.56 Forged Upper Receiver
Centurion Arms
$112.00
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Centurion Arms
CM4 5.56 Forged Upper Receiver
Our forged upper receivers are a great compliment to our forged lower receivers and are batched either with a MIL-Spec or Thermal Fit bore.
MIL-Spec inner dimension measures at 1.000 -0.0/+0.002"
Thermal Fit inner dimension measures at .997 -0.0/+0.001" and requires the application of heat in order to provide a solid mate to the recommended barrel extension. By heat we mean more than granny's hair dryer.
-For Use with M4 Barrel extensions
-Assembled Upper Receivers come with ejection port cover and forward assist installed
-Made in America on American-made machines
*** We recommend gunsmith installation for all of our parts. We cannot warranty items damaged by improper installation.
