The Aero Precision M4E1 5.56mm Assembled Upper Receiver is a high-performance upgrade for AR-15 enthusiasts. Engineered without a forward assist, it offers a clean profile and fewer snag points...

Aero Precision presents the AERO PRCSN AR15 FDE STRPD UPR RECVR, a masterpiece of engineering crafted from 7075-T6 aluminum. This assembled upper receiver is precision machined to mil-spec M16/M4...

The CMMG Banshee Upper Group 9mm 8 BLK is a testament to superior design and engineering, offering carbine-like ballistic performance in a compact size. This upper group utilizes CMMG's Radial...

The Aero Precision M5E1 Enhanced Assembled Upper Receiver is a marvel of engineering, combining the handguard mounting platform with the upper itself for a streamlined, robust design. Made from...

Introducing the CMMG DISSENT Upper Group 9MM 6.5 BLK, a marvel of engineering and design. This upper group features a 6.5-inch barrel, utilizing CMMG's patent-pending Compact Action and Radial...

CMMG introduces the DISSENT MK4 Upper Group 300BLK 6.5 BLK, a marvel of engineering and design. This upper group is crafted for those who desire a compact yet powerful solution for their AR15 or Mk4...

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...

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...

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...

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...

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...

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...