Aero Precision's M4E1 .300 Blackout Assembled Upper Receiver is a marvel of engineering, designed with precision and quality in mind. Featuring a 16" barrel with a pistol-length gas system, this upper receiver is perfect for range time and training. …

Aero Precision presents the M4E1-T Upper, a masterpiece in firearm engineering. This upper receiver is crafted with precision from 7075 T6 aluminum, ensuring durability and performance. It features an 8" .300 Blackout barrel with a 1:7 twist, perfect…

Aero Precision's EPC 9 Threaded Upper Receiver in Olive Drab Green is engineered for precision and reliability. Crafted from custom forged 7075-T6 aluminum, it features a last round bolt hold open mechanism and is compatible with most AR15 barrel nut…

Introducing the CMMG Banshee Upper Group 5.7x28 5 BLK, a marvel of modern engineering and design. This upper group is crafted with precision, featuring a 5-inch barrel and a radial delayed blowback operating system, ensuring smooth and reliable...

Aero Precision's M4E1 Assembled Upper Kodiak Brown offers a distinctive design with angular machined contours, setting it apart from conventional mil-spec upper receivers. Forged from durable 7075-T6 aluminum, it is precision machined for compatibili…

The Aero Precision M4E1-T Upper 5.56 14.5" BLK is a testament to precision engineering and design excellence. Featuring a 14.5" 5.56 NATO barrel with a mid-length gas system, this complete upper receiver offers a perfect balance of maneuverability an…

The Aero Precision M5 Complete Upper 22 6.5 Creedmoor Fluted FDE is a testament to precision engineering and design excellence. Featuring a stainless steel fluted barrel and ATLAS S-ONE 15 M-LOK handguard, this upper receiver offers superior accuracy…

Aero Precision's M4E1-T Complete Upper 14.5 5.56 Mid is engineered for precision and reliability. Crafted with a 7075 T6 aluminum upper receiver and a 14.5" 5.56 NATO barrel, it offers a sleek anodized black finish and enhanced handguard design for..…

The Aero Precision XL .450 Bushmaster Assembled Upper Receiver for AR-15 is crafted with precision engineering and high-quality anodized black finish. Designed for larger caliber builds, it features an enlarged ejection port and compatibility with AR…

Aero Precision's M4E1 5.56 Assembled Upper Receiver with the ATLAS S-ONE Handguard is a testament to superior design and engineering. This complete upper receiver is crafted for the AR-15 platform, featuring a robust 18-inch 5.56 NATO barrel with a 1…

Aero Precision's M4E1 Upper 16" 5.56 FDE is a testament to superior engineering and design. Crafted with precision, this upper receiver features a 16" 5.56 NATO barrel and a 15" Enhanced Gen 2 M-LOK Handguard, ensuring optimal performance and ease of…

Aero Precision's M4E1 300BLK ASSM UPPER GOV 8''BBL PISTOL-LENGTH THREADED BLK is a testament to precision engineering and robust design. Crafted for the AR-15 platform, this upper receiver features a sleek anodized black finish and an 8-inch .300...