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The Luth-AR URPK-A3 A3 Upper Receiver Parts Kit provides the small hardware you need to assemble or rebuild the ejection port door and forward assist on a standard MIL-SPEC AR-15 A3 flat-top upper receiver. Whether you are completing a build from scratch or replacing worn or missing components on an existing upper, this kit covers the springs, pins, rod, and cover hardware needed to keep the dust cover and forward assist functioning correctly.
Designed to fit MIL-SPEC AR-15 pattern upper receivers in the A3 flat-top configuration, the URPK-A3 is an essential service kit for armorers, gunsmiths, and home builders who want a complete set of small parts on hand without sourcing each spring and pin individually.
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