The CMMG 30BC40AMB Resolute MK4 is a testament to precision engineering and design excellence. This upper group, chambered in 300 Blackout, features a 16.10" barrel and a Midnight Bronze M-LOK...

The CMMG Banshee MK4 Upper Group 22LR 9 BLK is a testament to CMMG's dedication to quality engineering and design. This upper group is crafted for those looking to complete a .22 LR build or have a...

The CMMG Upper Receiver Assembly for Mk4/AR15 Armor Black is expertly crafted from aircraft-grade aluminum, ensuring a robust and durable build. This assembly features a ZEROED Polymer Dust Cover...

Aero Precision presents the M4E1 5.56MM Stripped Upper No Forward Assist for AR-15 FDE, a testament to superior engineering and design. This upper receiver is crafted from high-quality aircraft...

The CMMG 28B260CTI Resolute 22 ARC is engineered with precision, featuring a 16.10" 4140 steel barrel and a 15" M-LOK handguard for superior handling. This model is crafted from 7075-T6 aluminum,...

The Aero Precision M4E1-T Upper 5.56 10.5" BLK is a testament to precision engineering and design excellence. Crafted with a focus on durability and performance, this upper receiver features a 10.5"...

The Wilson Combat TRUPPERBIL Billet Upper Receiver is a testament to precision engineering and design excellence. Crafted from 7075-T6 aerospace aluminum, this upper receiver features a top Picatinny...

Wilson Combat's TRUPPER Forged Upper Receiver is a testament to precision engineering and robust design. Crafted from 7075-T6 aluminum forgings, this M4 Mil-Spec, flat-top upper receiver is CNC...

The FN FN15/AR 16'' Carbine Upper Receiver Assembly is a testament to superior engineering and design. Crafted with precision, this assembly features a 16-inch cold hammer-forged barrel, ensuring...

The FN FN15/AR 20'' Rifle Upper Receiver Assembly is a testament to precision engineering and quality craftsmanship. Designed for the AR-15 platform, this complete upper receiver assembly features a...

FN presents the FN 15 Military Collector Series M16A4 Complete Upper Receiver Assembly, a testament to precision engineering and historical authenticity. Crafted to FN's and the U.S. military's...