I have a brand new Magpul UBR stock. It is still in the plastic and has not been mounted before. SOLD $280 OBO for just UBR FTF or shipped within OR/WA $295 - This includes the buffer and spring which isn't normally included PM or Email me at email@example.com with any questions. Note: The UBR includes the necessary Entry Receiver Extension tube and all mounting hardware. An M4 Carbine Buffer and Spring are required for use with the UBR and are not included.