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    Machined to mil-spec dimensions, our lowers work with standard AR15 components and ensure the highest quality with a correct component interface.
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    Mil-spec dimensions and coating ensure the highest quality and correct component interface for your next big-bore AR.
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Upper Receivers

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Aero Precision M4E1 Threaded 10" .300 Blackout Complete Upper Receiver w/ ATLAS S-ONE Handguard

M4E1 Threaded 10" .300 Blackout Complete Upper Receiver w/ ATLAS S-ONE Handguard

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Discontinued

Added

M4E1 Enhanced 10" .300 Blackout Complete Upper Receiver

M4E1 Enhanced 10" .300 Blackout Complete Upper Receiver

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