Machining an AR-15 lower receiver from a raw (“0%”) forging

066frontRelief

At the front of the mag well there's a groove that provides clearance for rivets on the magazine.  This is easily put in with a drill and reamer at this stage.

At the front of the mag well there’s a groove that provides clearance for rivets on the magazine. This is easily put in with a drill and reamer at this stage.

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