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See how easy it is to build your own AR-15 upper receiver. Step-by-step with pictures, plus essential tools, recommended parts, tips/tricks, and two builds.

from Vertex Ops

2A Armament Balios-Lite Billet AR-15 Upper Receiver

2A Armament Balios-Lite Upper Receiver for AR15 - 5.85 Ounces

from Vertex Ops

2A Armament 7.5" Balios-LITE 5.56mm Complete Upper Receiver

2A Armament 7.5" Balios-Lite Complete 5.56mm Upper Receiver with Titanium Muzzle Brake