Introducing the CMMG Dissent MK4, a marvel of engineering and design. This upper receiver is crafted with precision, featuring CMMG's patent pending Compact Action and Radial Delayed Blowback...

The Aero Precision EPC-9-T Upper 9MM 16" BLK is a testament to Aero Precision's commitment to quality and engineering excellence. This complete upper receiver features a 16" barrel with a 1:10 twist...

Aero Precision's M4E1-T Upper 5.56 16" FDE is a testament to superior engineering and design. This complete upper receiver is crafted for AR-15 platforms, featuring a 16-inch barrel with a 1:7 twist,...

Aero Precision's M4E1 5.56 NATO Assembled Upper Receiver is a testament to precision engineering and design excellence. Featuring a 16'' barrel with a mid-length gas system, this upper receiver is...

Aero Precision's M5E1 6.5 CM Assembled Upper Hvy 22'' Rifle Threaded Black is a testament to precision engineering and quality design. Featuring a 22'' stainless steel barrel with a 1-8" twist, this...

The CMMG Banshee Mk4 Upper Group in 5.56x45mm is a testament to CMMG's engineering prowess, offering a compact and lightweight design perfect for building an ultra-compact AR15. With a 10.5-inch...

The Aero Precision M5 Complete Upper 22 6.5 Creedmoor SS Fluted is a testament to precision engineering and design excellence. Featuring a 22-inch fluted stainless steel barrel and a 15-inch ATLAS...

Aero Precision's M4E1 Enhanced 5.56mm Assembled Upper Receiver for AR-15 in Kodiak Brown is a marvel of engineering and design. This upper receiver integrates the handguard mounting platform with the...

The CMMG 28B260CSG Resolute 22 ARC is a testament to precision engineering and design excellence. Featuring a 16.10" 4140 steel barrel and a 15" M-LOK handguard, this firearm delivers 22-250 levels...

Aero Precision presents the M4E1-T Upper 5.56 10.5" FDE, a testament to superior engineering and design quality. This complete upper receiver is crafted for AR-15 builds, featuring a 10.5" barrel...

Aero Precision's M4E1 5.56mm 10.5" Carbine Upper Receiver is a testament to precision engineering and design excellence. Crafted from 7075 T6 aluminum, this upper receiver features a 10.5" barrel...

Aero Precision's M4E1 Threaded Assembled Upper Receiver showcases a new angular machined design, crafted from 7075-T6 aluminum for durability and precision. This upper receiver integrates seamlessly...