Daniel Defense manufactures the highest quality complete M4 upper receivers on the market today! Every Daniel Defense upper is painstakingly hand assembled, quality assurance tested, and test fired to ensure that the highest quality product makes it to the hands of our customers.
The Daniel Defense complete upper receiver groups come complete with bolt carrier group and charging handle while the stripped upper receiver group does not. The uppers are available with various choices of rail systems. The Daniel Defense M4 Upper Receiver Groups are light weight and rugged that are ready for action.
The barrels on our upper receiver groups are all constructed from 4150 MP tested steel and are chrome lined.
Precision crafted from the highest quality material available today with meticulous attention to detail, The Daniel Defense M4 Upper Receiver Groups will prove to be the standard in the industry.
