Upper

A2 carry handle style, complete with cuts for mounting A2 rear sight (windage and elevation). Features shell deflector, forward assist housing, and provisions for installing an ejection port cover. Precision machined from a premium-grade 7075 T6 aluminum...

The M4E1 Threaded Upper Receiver features a new angular machined design that helps it stand apart from standard mil-spec upper receivers. This upper receiver features the same enhanced body profile as our M4E1 Enhanced Upper Receiver but is threaded to...

The ARAK-21 is a gas piston actuated, complete upper receiver assembly designed to seamlessly interface with the standard AR-15 platform. The total extent of the interface is simply the take down pin, and the pivot pin. The new ARAK-21 upper receiver...

CMMGs RESOLUTE lineup is engineered with purpose for those who refuse to compromise on quality. Each RESOLUTE rifle comes with a 16-inch barrel and is designed for balance, accuracy and maneuverability. Whether youre defending your family or looking to...

Rock River Arms A4 Carbine upper comes chambered in .350 Legend with a 16" chrome moly 1/16 twist barrel. Additionally this upper includes a RRA 13" M-Lok compatible lightweight free float rail and a RRA Operator Brake (1/2-36 thread). This is a complete...

CMMGs Upper Receiver Assembly is made from billet 7075 T6 AL.Features :For AR10 riflesBillet 7075 T6 Aluminum, Cerakoted Armor Black

Manufacturing a great receiver isnt just about what the end product looks like. Its about what it feels like, how it works, how it handles and performs. Aero Precision products have been recognized across the country by members of the military and law...

Spikes complete upper assemblies will arrive to you inspected, tested, and ready to drop-in and go to work. Spikes maintains the same high standard of tolerances and attention to detail as the uppers they use for complete rifle builds. Every built upper...

Spikes complete upper assemblies will arrive to you inspected, tested, and ready to drop-in and go to work. Spikes maintains the same high standard of tolerances and attention to detail as the uppers they use for complete rifle builds. Every built upper...

The Daniel Defense M4 V7 LW Upper Receiver Group is built around a Cold Hammer Forged 16" Lightweight profile barrel-which is two ounces less than a standard V7 barrel-and equipped with a DD improved Flash Suppressor to reduce flash signature. It...

LBE Unlimited is a leading producer of US Made gun parts and accessories, particularly for the AR-15 platform. Whether youre in the middle of an AR build or youre just looking to upgrade a key component, LBE has you covered with reliable parts and...

The Daniel Defense M4 V7 Upper Receiver Group is built around a Cold Hammer Forged 16" Government profile barrel and equipped with a DD improved Flash Suppressor to reduce flash signature. It features a mid-length gas system for smooth, reliable cycling...