Complete buffer tube kit for your AR-15 rifle/carbine from Aero Precision. Included are the buffer, 6" tube, spring, castle nut and end plate. These are unused factory new parts. The buffer tube has six positions for an adjustable stock. Asking $25 for the entire kit. Buyer must be willing to meet in the Boerne / Fair Oaks Ranch area for a FTF transaction. If you want to save the drive time and gas, I can ship this to you via U.S.P.S. for an additional $5 as long as funds are received in advance. Besides cash I also accept Zelle and PayPal(F&F).