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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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    The EPC-9 lineup is perfect for your next 9mm or 40S&W AR build.
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Upper Receivers

Upper Receivers

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Upper Receivers

RECEIVER SETS

COMPLETE UPPERS

ASSEMBLED UPPERS

STRIPPED UPPERS

Added

Aero Precision M4E1 Threaded Complete Upper, 20" 6.5 Grendel SS Barrel, ATLAS R-ONE 15" KeyMod HG - Anodized

M4E1 Threaded 20" 6.5 Grendel Complete Upper Receiver w/R-ONE Handguard

Added

Aero Precision M4E1 Threaded Complete Upper, 18" 6.5 Grendel SS Barrel, ATLAS R-ONE 15" M-LOK HG - Anodized

M4E1 Threaded 18" 6.5 Grendel Complete Upper Receiver w/R-ONE Handguard

Added

Aero Precision M4E1 Threaded Complete Upper, 18" 6.5 Grendel SS Barrel, ATLAS S-ONE 15" M-LOK HG - Anodized Black

M4E1 Threaded 18" 6.5 Grendel Complete Upper Receiver w/S-ONE Handguard

Added

Aero Precision M4E1 Threaded Complete Upper, 20" 6.5 Grendel SS Barrel, ATLAS S-ONE 15" M-LOK HG - Anodized Black

M4E1 Threaded 20" 6.5 Grendel Complete Upper Receiver w/S-ONE Handguard

Added

Aero Precision M4E1 Threaded Complete Upper, 20" 6.5 Grendel SS Barrel, ATLAS R-ONE 15" M-LOK HG - Anodized

M4E1 Threaded Complete Upper, 20" 6.5 Grendel SS Barrel,R-ONE 15" M-LOK HG - Anodized

Builder Sets

April Builder Sets:

Irish DPM Camo

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Cyber Week

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SAVE BIG SITE-WIDE!

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Builder Sets

Builder Sets:

Forsaken Marshlands

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Added

Aero Precision M4E1 Threaded Complete Upper, 18" 6.5 Grendel SS Barrel, ATLAS R-ONE 15" M-LOK HG - Anodized

M4E1 Threaded Complete Upper, 18" 6.5 Grendel SS Barrel,R-ONE 15" M-LOK HG - Anodized

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