LBE Unlimited 4-Position Buffer Tube Kit Black. 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 4-Position Buffer Tube Kit: Manufacturer: LBE Unlimited Color: Black Features of LBE Unlimited 4-Position Buffer Tube Kit Black: LBE 4 Position Buffer Tube Kit Package Contents: LBE Unlimited 4-Position Buffer Tube Kit 4 Position Mil Spec Buffer Tube Castle Nut Standard End Plate Carbine Length Recoil Spring Standard Recoil Buffer LBE Unlimited MILBUFKT-4POS: 4-Position Buffer Tube Kit Black