AR15 Carbine Mil-spec Lower Receiver 5pc Buffer Tube Kit (w/ Us Made Tube)

5 items included, complete Mil-Spec buffer tube kit:- Lower Receiver Extension Buffer Tube, 6 position - Tube is made in U.S.A.- AR Castle Nut / Buffer Tube Locking Ring- AR Receiver End Plate- AR Carbine Buffer (3 oz, 3.25")- AR Carbine Buffer Spring Use with adjustable butt stocks that are designed for Mil-Spec diameter buffer tubes (1.14").  Commercial size stocks are wider (1.17") and won't fit correctly.