This 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
AR-15 Buffer Castle Nut
Stock Buffer End Plate
AR-15 Carbine Length Buffer Spring - Steel
AR-15 Collapsible Stock Buffer -3.0 OZ-Carbine Length (BLACK)