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  - AR15/M4E1
    
    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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    The EPC-9 lineup is perfect for your next 9mm or 40S&W AR build.
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    The Aero Precision SOLUS works to provide hunters, competitors, and shooting enthusiasts with a custom shooting experience.
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    The Lahar-30 is built to be a workhorse — providing durability, performance, and flexibility in a single package.
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Upper Receivers

Upper Receivers

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Upper Receivers

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Aero Precision M4E1 Threaded Complete Upper, 10" .300 Blackout Barrel, 9" M-LOK ATLAS S-ONE Handguard - FDE Cerakote

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

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Discontinued

Added

Aero Precision M4E1 10" .300 Blackout 9" M-LOK Handguard Complete Upper Receiver - FDE

M4E1 Enhanced 10" .300 Blackout Complete Upper Receiver

Added

M4E1 Threaded Complete Upper, 10" .300 Blackout Barrel, ATLAS R-ONE 9" M-LOK HG - FDE Cerakote

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

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