The AR-15 receiver is made up of two parts in its design. There is the upper receiver and the lower receiver, each which control critical functions of the AR-15. The upper assembly is a completed upper receiver which includes all the components necessary to cycle the action. Here is what the AR-15 Upper Assembly comes with

What does an AR-15 Upper Assembly come with?

• AR-15 upper receiver with M4 feed ramps
• .223 wylde or 5.56 nato barrel
• Keymod  or MLok handguard 
• Flash hider
• .223/5.56 bolt carrier group
• Charging handle

What Kinds of AR-15 Upper Assemblies are there?

The AR-15 can come in a rifle or pistol variant. That means that different upper assemblies come with different barrel sizes in  order to accommodate the legal requirements for a pistol or a rifle. 

Is the AR-15 Upper Assembly legal?

AR-15 Upper assemblies are legal, as they do not involve the lower receiver portion of the AR. Because of this, the upper assembly does not require an FFL transfer or a background check in order to purchase. It can be shipped directly to your door. 

Why buy an AR-15 upper assembly from SteelFox Firearms?

The AR-15 upper assembly isa pivotal part of the AR-15 system. Where it is a crucial part of  the AR-15, it is also crucial for customization and modification. Ensuring your upper has a mounting system and attachments that are right for you is important, not just for the performance of the firearm you will build, but for the purpose for which you are building it for. At SteelFox Firearms, we understand this and strive to supply our customers with quality parts at the most affordable prices.