Radical Firearms AR-15 Upper Receiver Features The Radical Firearms AR-15 Upper Receiver is forged from 7075-T6 aluminum a manufacturing process that provides superior structural strength compared to billet-machined or cast alternatives. Precision machining of the receiver body helps ensure consistent fitment with compatible AR platform parts from the barrel and barrel nut to the bolt carrier group and charging handle. M4 feed ramp cuts are integrated into the receiver to support smooth and reliable cartridge feeding as the action cycles through its stroke. Built to Mil-Spec dimensions the receiver is guaranteed to mate properly with standard AR-15 lower receivers and components. This upper ships stripped which leaves the builder free to select and install their own charging handle bolt carrier group and forward assist to match the exact build they are after. A Type III hardcoat anodized finish in black enhances corrosion resistance and improves long-term wear durability through years of use. The forged lightweight design keeps the receiver durable without adding unnecessary weight to the completed rifle. For the builder assembling a custom AR-15 rifle or pistol from the ground up the Radical Firearms stripped upper receiver is for sale at GrabAGun as a dependable builder-friendly foundation. Radical Firearms AR-15 Upper Receiver Specifications Manufacturer: Radical Firearms Model: AR-15 Upper Receiver Upper Type: Stripped Material: Aluminum Construction: 7075-T6 Forged Finish: Type III Hardcoat Anodized Compatible Hosts: AR-15 Color: Black Available At: GrabAGun