HYBRID POLYMER LOWER RECEIVERS FOR FIREARMS AND METAL THREADED INSERTS, KITS AND METHODS THEREFOR

摘要

Threaded metal inserts for polymer lower receivers and hybrid polymer lower receivers comprising one or more of such inserts, as well as kits and methods therefor are disclosed. A threaded metal insert has a substantially circular aperture configured with screw threads to releasably yet connectively interface with a separate traditionally threaded firearm component such as a buffer tube or a pistol grip screw. Inserts can be any overall shape so long as it can be integrally embedded within a traditionally threaded portion of a polymer lower receiver in a way that does not interfere with normal operation of an assembled firearm and leaves exposed the internal threading of the insert. Inserts can also comprise textural features on the exterior surface configured to permanently interface with and embed the an insert into molded polymer. A hybrid polymer and metal lower receiver is a stripped polymer lower receiver for an AR type firearm, such as the AR-15 or AR-10, having one or more such threaded metal inserts at least partially embedded in a portion thereof.

主权项

1. A threaded insert for a polymer receiver for a firearm, comprising:
(a) an insert body sized and shaped to be at least partially embedded within said receiver; (b) an aperture extending linearly through at least a portion of said insert body; (c) screw threads for releasable connection with a traditionally threaded component of a receiver assembly for a firearm; and (d) an exterior circumference with one or more textural features configured to interface with and retain a polymer.