Rifle upper receiver with integral magazine well
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United States of America Patent
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Jul 16, 2013
Grant Date -
Apr 28, 2011
app pub date -
Oct 23, 2009
filing date -
Oct 23, 2009
priority date (Note) -
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status (Latency Note)
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Abstract
Rifle upper receivers with integral magazine wells include an extruded elongate inverted U-shaped channel with an interior bore. The interior of the channel has elements formed as surfaces of extrusion. The surfaces of extrusion provide guidance and support for a magazine and trigger guard assembly pins. The present invention is manufactured by extruding an elongate tube in a closed-box profile with an interior bore, milling a series of slots into the top of the tube, machining a bottom channel opening by removing portions of the bottom of the tube, machining holes in the sides of the tube, and machining a recess in the top of the interior of the tube.
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