The ar15 complete bolt carrier group comes assembled and ready to go.It is constructed of phosphate coated 8620 steel with chrome-lined interior and gas key.Finish: Black PhosphateModel: Complete...
The lbe rifle length gas tube is constructed of 304 stainless steel and includes gas tube roll pin.Finish: Stainless SteelModel: Gas TubeSize: Rifle LengthMaterial: 304 Stainless Steel