The blue mil-spec buffer tube kit includes an end plate castle nut aluminum carbine buffer tube buffer and buffer tube spring. The Buffer Tube is constructed of 6061 T6 Aluminum and is durable and weather-resistant.
AR-15 Stock Buffer Tube Mil Spec - Blue
AR-15 Buffer Castle Nut - Blue
Stock Buffer End Plate - Blue
Steel Spring for Buffer Stock
AR-15 Collapsible Stock Buffer 3.0 oz Carbine Length - Blue