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The much-anticipated Aero Precision M4E1 Builder Sets are here! These unique finishes are available one time only and in limited quantities, so get one while you can!
The M4E1 Threaded Upper Receiver features a new angular machined design that helps it stand apart from standard mil-spec upper receivers. It is forged from 7075-T6 Aluminum, precision machined to work with all mil-spec AR15 parts and includes the port door and forward assist pre-installed.
The M4E1 Threaded Upper Receiver is designed to pair perfectly with Aero Precision's new M4E1 Lower Receiver, giving you a billet looking receiver set at a fraction of the billet price.
Features:
Includes:
The M4E1 Lower Receiver delivers billet aesthetics in a forged package. This custom designed enhanced forging is machined from 7075-T6 Aluminum and compatible with all mil-spec AR15 parts. Aside from the visual upgrades this custom engineered design provides that challenge much more expensive billet options, Aero Precision has added several functional features to the lower receiver to simplify the assembly process for the at home builder.
M4E1 Lower Receiver Improvements:
Each Builder Set will ship with your choice of Aero Precision handguard. See our custom options above to choose a handguard that will best suit your next build.