Yankee Hill AR-15 Smooth Carbine Upper Receiver Assembly 5.56x45mm NATO 16" Barrel
- Upper Receiver Type: Mil-Spec 7075-T6 Forged Flat-Top
- Barrel Length: 16" Fluted
- Barrel Contour: Not listed by manufacturer
- Barrel Material: Chrome Moly Steel
- Muzzle Thread Pattern: 1/2"-28
- Chrome Lined: Yes
- Barrel Finish: Black Matte
- Twist Rate: 1 in 7"
- Chamber: 5.56x45mm NATO
- M4 Feed Ramps: Yes
- Muzzle Device: Phantom 5C2 Flash Hider
- Gas System Length: Carbine
- Gas Block Diameter: .750"
- Handguard: Yankee Hill Smooth Free Float
- Sights: Yankee Hill Front and Rear Flip Up
- Bolt Carrier Assembly Included: Yes
- Bolt Carrier Type: Commercial
Please Note: Installation of AR-15 upper assemblies with certain features including, but not limited to: flash hiders, bayonet lugs, and threaded muzzles may violate state and/or local laws.
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