M4E1 Threaded Complete Upper, 10" .300 Blackout Barrel, 9.3" M-LOK S-ONE Handguard - Purple Anodized
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Aero Precision
Overview
The Aero Precision M4E1 Threaded Complete Upper features a 10" barrel chambered in .300 Blackout, designed for a pistol-length gas system. This upper receiver is fully assembled and includes a 5/8x24 thread pitch for easy attachment of muzzle devices, making it a practical choice for builders looking to optimize their short-barreled AR-15 configurations. This upper is commonly used in builds where compact design and versatility for subsonic and supersonic ammunition are key considerations.
Specifications
M4E1 Threaded Complete Upper, 10" .300 Blackout Barrel, 9.3" M-LOK S-ONE Handguard - Purple Anodized
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Build history on GunPartPicker
Builders have been adding the Aero Precision M4E1 Threaded Complete Upper, 10" .300 Blackout Barrel, 9.3" M-LOK S-ONE Handguard - Purple Anodized to their builds on GunPartPicker since February 2026. All time, it ranks #919 of the 1,656 upper receivers builders have added.
Updated · from real builds on GunPartPicker
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Frequently Built With
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Builds Featuring This Part
See all 1 →Builds in the community that include the M4E1 Threaded Complete Upper, 10" .300 Blackout Barrel, 9.3" M-LOK S-ONE Handguard - Purple Anodized
| Build | Parts | Total |
|---|---|---|
 | 14 | $1052.32 |
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