LBE Unlimited Upper Parts Kit AR-15. They take immense pride in supporting jobs maintaining rigorous quality control and ensuring their customers receive parts they can trust no matter the application. Specifications for LBE Unlimited Upper Parts Kit: Manufacturer: LBE Unlimited Color: Black Caliber: 5.56x45mm NATO Gun Make: AR Platform Gun Model: AR-15 Gun Type: Rifle Features of LBE Unlimited Upper Parts Kit For AR-15: This Kit Includes the Small Parts to Complete your Upper Package Contents: LBE Unlimited Upper Parts Kit What firearm models does the manufacturer say LBE Unlimited Upper Parts Kit is compatible with? The manufacturer says that LBE Unlimited Upper Parts Kit is compatible with AR-15LBE Unlimited AR15-UPK: Upper Parts Kit AR-15