This guide covers essential AR-15 maintenance, focusing on lubrication for firearms that haven't been used recently or ever. It details how to properly apply CLP or oil to metal-on-metal parts within the upper receiver, BCG, and charging handle, while also noting the expected presence of grease on the buffer spring and buffer. The video also addresses the common discovery of cosmoline on new, off-the-shelf AR-15s and how to remove it.
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