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Yankee Hill Machine Specter Upper Assembly Kit AR-15 9mm Luger 16" Barrel 1 in 14" Twiste Matte With 32-Round Magazine. The Yankee Hill Machine Specter Upper Assembly Kit contains a complete, 9mm Specter Upper Receiver Assembly as well as all the parts required to convert your standard 223/5.56 AR-15 to 9mm. Caliber conversion is easily done at the operator level; swap out a few parts, then attach the upper receiver and the rifle is ready to go.
YHM 9mm Specter Upper Assembly with flip up front and rear sights
Ramped 9mm bolt carrier group
Hahn Precision magwell adapter
YHM extended heavyweight buffer
Product #: 163590
Yankee Hill #: YHM-7810-9K
UPC #: 00816701011241
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