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SilencerCo, SCO15, Stripped Upper Receiver SilencerCo's AR-15 upper receiver is made from billet 7075-T6 aluminum, it is precision machined for compatibility with all of your preferred parts.
With the SilencerCo billet AR-15 upper receiver, you get the materials, finish, and features you want and need to complete your dream AR-15 build. Stripped upper receiver 7075-t6 aluminum Anodized black