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

003FirstCut

The first cut is made across the deck, and on three sides of the buffer tube tower.  The instructions detail using a small endmill to do this, but using a 1.5" diameter end mill hits the right radius in one pass.

The first cut is made across the deck, and on three sides of the buffer tube tower. The instructions detail using a small endmill to do this, but using a 1.5″ diameter end mill hits the right radius in one pass.

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