Yankee Hill AR-15 Entry Rifle Upper Receiver Assembly 5.56x45mm NATO 20" Barrel
- Upper Receiver Type: Mil-Spec 7075-T6 Forged Flat-Top
- Barrel Length: 20"
- Barrel Contour: Not listed by manufacturer
- Barrel Material: Chrome Moly Steel
- Muzzle Thread Pattern: None-Crowned
- Chrome Lined: Yes
- Barrel Finish: Black Matte
- Twist Rate: 1 in 7"
- Chamber: 5.56x45mm NATO
- M4 Feed Ramps: Yes
- Muzzle Device: None
- Gas System Length: Rifle
- Gas Block Diameter: Not listed by manufacturer
- Handguard: Yankee Hill Knurled Free Float
- Sights: None-Includes Mini Scope Riser Mounts
- Bolt Carrier Assembly Included: Yes
- Bolt Carrier Type: Mil-Spec
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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