Aero Precision's M4E1 5.56 Assembled Upper Receiver with the ATLAS S-ONE Handguard is a testament to superior design and engineering. Featuring a lightweight build with a slim profile, this upper...

The CMMG RESOLUTE MK4 UPPER GROUP 300BLK 16.1 BLK is a testament to superior engineering and design. Crafted for versatility, this upper group is perfect for completing your next carbine build. It...

Aero Precision presents the M4E1 5.56 Assembled Upper with an 11.5'' barrel, designed for precision and reliability. This upper receiver features a government profile barrel, carbine-length gas...

Aero Precision's M4E1 5.56 Assembled Upper Receiver Threaded with AR15 Semi-Cut Black showcases a new angular machined design, setting it apart from standard mil-spec upper receivers. Crafted from...

The AERO M4E1-T Complete Upper is a testament to Aero Precision's commitment to quality and innovation. This upper features an 18" .223 Wylde QPQ rifle length barrel, designed for precision and...

The CMMG DISSENT Upper Group 9mm 10.5 BLK is a testament to innovative design and engineering excellence. Featuring a 10.5-inch barrel, this upper group utilizes CMMG's patent-pending Compact Action...

Aero Precision's EPC-9 9MM Assembled Upper Threaded 8.3'' BBL 7.3'' Handguard is engineered with precision and quality. This upper receiver is crafted from custom forged 7075-T6 aluminum, offering a...

The Aero Precision EPC-9 9MM Assembled Upper Threaded 5.5'' BBL 4.8'' Handguard showcases exceptional engineering and design quality. This complete upper receiver is crafted for seamless installation...

Aero Precision's M4E1 350 Legend Assembled Upper M4 20'' Carbine Threaded FDE is engineered for precision and reliability. Crafted with a Cerakote finish and aircraft aluminum, it features a 20-inch...

The Aero Precision M5 Complete Upper 16" .308 Mid is a testament to Aero Precision's commitment to quality engineering and design. This upper receiver is crafted with precision, featuring a 16-inch...

The CMMG Banshee Mk4 AR-15 Upper Group in .338 ARC combines the renowned AR15 platform with the power of a large bore caliber. This upper group is engineered for versatility, offering more energy on...

The Aero Precision M4E1 Assembled Gen 2 Upper Receiver 7.5" Pistol Length is a testament to precision engineering and high-quality design. Crafted from 7075 T6 aluminum, it features a hard coat...