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M4E1 Threaded 16" .223 Wylde SS QPQ Complete Upper Receiver w/ 15" M-LOK R-ONE Handguard

This complete upper includes our ATLAS S-ONE Handguard! The S-ONE line of handguards are designed with size and weight in mind, providing the perfect addition to your lightweight build. Our proprietary ATLAS attachment system is a durable and dependable mounting platform, maintaining a slim profile while still providing the strength and stability customers have grown to love from Aero Precision handguards.

Includes:

M4E1 Threaded Assembled Upper Receiver

15" M-LOK ATLAS R-ONE Handguard of choice

16" .223 Wylde Stainless Steel QPQ Barrel, Mid-Length

Low Profile Gas Block and Mid-Length Gas Tube

A2 Flash Hider

Product comes assembled

This complete upper does not include BCG or Charging Handle. These products may be selected as add-ons under the Finish Your Build tab