UPPER RECEIVER DETAILS:
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
**FFL Required Before Shipping. Please have your dealer email their license to sales@centurionarms.com and have them reference your name/order number.
No we do NOT accept fax as we live in the modern world and we also do NOT accept carrier pigeon. **
*** We recommend gunsmith installation for all of our parts. We cannot warranty items damaged by improper installation.
Custom Cerakote Disclaimer:
Custom Cerakote is completed per order. Our Cerakote room runs one color at a time so your ship date will be subject to the color rotaion at the time the order is placed. You will receive an email confirmation once the item has actually been packaged to ship.
Cerakote items are not guaranteed to match separate batches or Cerakote completed by outside parties. While we strive to keep our mix uniformed for our own products, we can't say for certain what Walter and Jesse cooked up in their lab out in Albuquerque.
