Yankee Hill 110 Flat Top AR-15 .223 Rem/5.56x45mm NATO Stripped Upper Receiver - Black

The Yankee Hill 110 Flat Top Upper Receiver is a stripped A3/flat-top upper receiver for building an AR-15 upper assembly. It is compatible with standard mil-spec AR-15 lower receivers and supports .223 Remington and 5.56x45mm NATO configurations.

Yankee Hill machines the receiver from forged 7075-T6 aluminum and finishes it in black anodized matte hard-coat finish. Its interior carries a dry-film lubricant coating, while M4-style feed ramps support a standard AR-15 upper build.

An integral flat-top Picatinny rail with T position markings provides an optic-ready mounting surface. No sights are included. The receiver accepts standard upper-receiver components, including a forward assist and ejection-port dust cover.

This is the receiver only. A forward assist, dust-cover assembly, barrel, charging handle, bolt-carrier group, handguard, gas block, gas tube, and muzzle device are required to complete an upper assembly.

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