This drop-in upper will attach to virtually any standard AR-15 lower assembly. Comes complete with charging handle, Mil Spec bolt and bolt carrier assembly, it is ready to pin to a complete lower assembly without modification. The Yankee Hill Customizable AR-15 Carbine Upper features flip up sights and Yankee Hill's customizable free float handguard.
16" chrome lined barrel
Yankee Hill Diamond Fluting in barrel to reduce weight and increase barrel cooling
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